Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull security layer updates from James Morris:
 "Highlights:

   - Smack adds secmark support for Netfilter
   - /proc/keys is now mandatory if CONFIG_KEYS=y
   - TPM gets its own device class
   - Added TPM 2.0 support
   - Smack file hook rework (all Smack users should review this!)"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (64 commits)
  cipso: don't use IPCB() to locate the CIPSO IP option
  SELinux: fix error code in policydb_init()
  selinux: add security in-core xattr support for pstore and debugfs
  selinux: quiet the filesystem labeling behavior message
  selinux: Remove unused function avc_sidcmp()
  ima: /proc/keys is now mandatory
  Smack: Repair netfilter dependency
  X.509: silence asn1 compiler debug output
  X.509: shut up about included cert for silent build
  KEYS: Make /proc/keys unconditional if CONFIG_KEYS=y
  MAINTAINERS: email update
  tpm/tpm_tis: Add missing ifdef CONFIG_ACPI for pnp_acpi_device
  smack: fix possible use after frees in task_security() callers
  smack: Add missing logging in bidirectional UDS connect check
  Smack: secmark support for netfilter
  Smack: Rework file hooks
  tpm: fix format string error in tpm-chip.c
  char/tpm/tpm_crb: fix build error
  smack: Fix a bidirectional UDS connect check typo
  smack: introduce a special case for tmpfs in smack_d_instantiate()
  ...

Documentation/ABI/stable/sysfs-class-tpm

-What:		/sys/class/misc/tpmX/device/
+What:		/sys/class/tpm/tpmX/device/
 Date:		April 2005
 KernelVersion:	2.6.12
 Contact:	tpmdd-devel@lists.sf.net
@@ -6,7 +6,7 @@ Description:	The device/ directory under a specific TPM instance exposes
 		the properties of that TPM chip
 
 
-What:		/sys/class/misc/tpmX/device/active
+What:		/sys/class/tpm/tpmX/device/active
 Date:		April 2006
 KernelVersion:	2.6.17
 Contact:	tpmdd-devel@lists.sf.net
@@ -18,7 +18,7 @@ Description:	The "active" property prints a '1' if the TPM chip is accepting
 		section 17 for more information on which commands are
 		available.
 
-What:		/sys/class/misc/tpmX/device/cancel
+What:		/sys/class/tpm/tpmX/device/cancel
 Date:		June 2005
 KernelVersion:	2.6.13
 Contact:	tpmdd-devel@lists.sf.net
@@ -26,7 +26,7 @@ Description:	The "cancel" property allows you to cancel the currently
 		pending TPM command. Writing any value to cancel will call the
 		TPM vendor specific cancel operation.
 
-What:		/sys/class/misc/tpmX/device/caps
+What:		/sys/class/tpm/tpmX/device/caps
 Date:		April 2005
 KernelVersion:	2.6.12
 Contact:	tpmdd-devel@lists.sf.net
@@ -43,7 +43,7 @@ Description:	The "caps" property contains TPM manufacturer and version info.
 		the chip supports. Firmware version is that of the chip and
 		is manufacturer specific.
 
-What:		/sys/class/misc/tpmX/device/durations
+What:		/sys/class/tpm/tpmX/device/durations
 Date:		March 2011
 KernelVersion:	3.1
 Contact:	tpmdd-devel@lists.sf.net
@@ -66,7 +66,7 @@ Description:	The "durations" property shows the 3 vendor-specific values
 		scaled to be displayed in usecs. In this case "[adjusted]"
 		will be displayed in place of "[original]".
 
-What:		/sys/class/misc/tpmX/device/enabled
+What:		/sys/class/tpm/tpmX/device/enabled
 Date:		April 2006
 KernelVersion:	2.6.17
 Contact:	tpmdd-devel@lists.sf.net
@@ -75,7 +75,7 @@ Description:	The "enabled" property prints a '1' if the TPM chip is enabled,
 		may be visible but produce a '0' after some operation that
 		disables the TPM.
 
-What:		/sys/class/misc/tpmX/device/owned
+What:		/sys/class/tpm/tpmX/device/owned
 Date:		April 2006
 KernelVersion:	2.6.17
 Contact:	tpmdd-devel@lists.sf.net
@@ -83,7 +83,7 @@ Description:	The "owned" property produces a '1' if the TPM_TakeOwnership
 		ordinal has been executed successfully in the chip. A '0'
 		indicates that ownership hasn't been taken.
 
-What:		/sys/class/misc/tpmX/device/pcrs
+What:		/sys/class/tpm/tpmX/device/pcrs
 Date:		April 2005
 KernelVersion:	2.6.12
 Contact:	tpmdd-devel@lists.sf.net
@@ -106,7 +106,7 @@ Description:	The "pcrs" property will dump the current value of all Platform
 		1.2 chips, PCRs represent SHA-1 hashes, which are 20 bytes
 		long. Use the "caps" property to determine TPM version.
 
-What:		/sys/class/misc/tpmX/device/pubek
+What:		/sys/class/tpm/tpmX/device/pubek
 Date:		April 2005
 KernelVersion:	2.6.12
 Contact:	tpmdd-devel@lists.sf.net
@@ -158,7 +158,7 @@ Description:	The "pubek" property will return the TPM's public endorsement
 		Modulus Length: 256 (bytes)
 		Modulus:	The 256 byte Endorsement Key modulus
 
-What:		/sys/class/misc/tpmX/device/temp_deactivated
+What:		/sys/class/tpm/tpmX/device/temp_deactivated
 Date:		April 2006
 KernelVersion:	2.6.17
 Contact:	tpmdd-devel@lists.sf.net
@@ -167,7 +167,7 @@ Description:	The "temp_deactivated" property returns a '1' if the chip has
 		cycle. Whether a warm boot (reboot) will clear a TPM chip
 		from a temp_deactivated state is platform specific.
 
-What:		/sys/class/misc/tpmX/device/timeouts
+What:		/sys/class/tpm/tpmX/device/timeouts
 Date:		March 2011
 KernelVersion:	3.1
 Contact:	tpmdd-devel@lists.sf.net

Documentation/devicetree/bindings/security/tpm/st33zp24-i2c.txt

+* STMicroelectronics SAS. ST33ZP24 TPM SoC
+
+Required properties:
+- compatible: Should be "st,st33zp24-i2c".
+- clock-frequency: I²C work frequency.
+- reg: address on the bus
+
+Optional ST33ZP24 Properties:
+- interrupt-parent: phandle for the interrupt gpio controller
+- interrupts: GPIO interrupt to which the chip is connected
+- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state.
+If set, power must be present when the platform is going into sleep/hibernate mode.
+
+Optional SoC Specific Properties:
+- pinctrl-names: Contains only one value - "default".
+- pintctrl-0: Specifies the pin control groups used for this controller.
+
+Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2):
+
+&i2c2 {
+
+        status = "okay";
+
+        st33zp24: st33zp24@13 {
+
+                compatible = "st,st33zp24-i2c";
+
+                reg = <0x13>;
+                clock-frequency = <400000>;
+
+                interrupt-parent = <&gpio5>;
+                interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;
+
+                lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>;
+        };
+};

Documentation/security/keys.txt

@@ -323,8 +323,6 @@ about the status of the key service:
 	U	Under construction by callback to userspace
 	N	Negative key
 
-     This file must be enabled at kernel configuration time as it allows anyone
-     to list the keys database.
 
  (*) /proc/key-users
 

MAINTAINERS

@@ -4917,7 +4917,7 @@ F:	drivers/ipack/
 
 INTEGRITY MEASUREMENT ARCHITECTURE (IMA)
 M:	Mimi Zohar <zohar@linux.vnet.ibm.com>
-M:	Dmitry Kasatkin <d.kasatkin@samsung.com>
+M:	Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
 L:	linux-ima-devel@lists.sourceforge.net
 L:	linux-ima-user@lists.sourceforge.net
 L:	linux-security-module@vger.kernel.org
@@ -9817,13 +9817,21 @@ F:	drivers/media/pci/tw68/
 
 TPM DEVICE DRIVER
 M:	Peter Huewe <peterhuewe@gmx.de>
-M:	Ashley Lai <ashley@ashleylai.com>
 M:	Marcel Selhorst <tpmdd@selhorst.net>
 W:	http://tpmdd.sourceforge.net
 L:	tpmdd-devel@lists.sourceforge.net (moderated for non-subscribers)
+Q:	git git://github.com/PeterHuewe/linux-tpmdd.git
+T:	https://github.com/PeterHuewe/linux-tpmdd
 S:	Maintained
 F:	drivers/char/tpm/
 
+TPM IBM_VTPM DEVICE DRIVER
+M:	Ashley Lai <ashleydlai@gmail.com>
+W:	http://tpmdd.sourceforge.net
+L:	tpmdd-devel@lists.sourceforge.net (moderated for non-subscribers)
+S:	Maintained
+F:	drivers/char/tpm/tpm_ibmvtpm*
+
 TRACING
 M:	Steven Rostedt <rostedt@goodmis.org>
 M:	Ingo Molnar <mingo@redhat.com>

drivers/char/tpm/Kconfig

@@ -100,15 +100,15 @@ config TCG_IBMVTPM
 	  will be accessible from within Linux.  To compile this driver
 	  as a module, choose M here; the module will be called tpm_ibmvtpm.
 
-config TCG_ST33_I2C
-	tristate "STMicroelectronics ST33 I2C TPM"
+config TCG_TIS_I2C_ST33
+	tristate "TPM Interface Specification 1.2 Interface (I2C - STMicroelectronics)"
 	depends on I2C
 	depends on GPIOLIB
 	---help---
 	  If you have a TPM security chip from STMicroelectronics working with
 	  an I2C bus say Yes and it will be accessible from within Linux.
 	  To compile this driver as a module, choose M here; the module will be
-	  called tpm_stm_st33_i2c.
+	  called tpm_i2c_stm_st33.
 
 config TCG_XEN
 	tristate "XEN TPM Interface"
@@ -122,4 +122,13 @@ config TCG_XEN
 	  To compile this driver as a module, choose M here; the module
 	  will be called xen-tpmfront.
 
+config TCG_CRB
+	tristate "TPM 2.0 CRB Interface"
+	depends on X86 && ACPI
+	---help---
+	  If you have a TPM security chip that is compliant with the
+	  TCG CRB 2.0 TPM specification say Yes and it will be accessible
+	  from within Linux.  To compile this driver as a module, choose
+	  M here; the module will be called tpm_crb.
+
 endif # TCG_TPM

drivers/char/tpm/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the kernel tpm device drivers.
 #
 obj-$(CONFIG_TCG_TPM) += tpm.o
-tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o
+tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o tpm-chip.o tpm2-cmd.o
 tpm-$(CONFIG_ACPI) += tpm_ppi.o
 
 ifdef CONFIG_ACPI
@@ -20,5 +20,6 @@ obj-$(CONFIG_TCG_NSC) += tpm_nsc.o
 obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o
 obj-$(CONFIG_TCG_INFINEON) += tpm_infineon.o
 obj-$(CONFIG_TCG_IBMVTPM) += tpm_ibmvtpm.o
-obj-$(CONFIG_TCG_ST33_I2C) += tpm_i2c_stm_st33.o
+obj-$(CONFIG_TCG_TIS_I2C_ST33) += tpm_i2c_stm_st33.o
 obj-$(CONFIG_TCG_XEN) += xen-tpmfront.o
+obj-$(CONFIG_TCG_CRB) += tpm_crb.o

drivers/char/tpm/tpm-chip.c

+/*
+ * Copyright (C) 2004 IBM Corporation
+ * Copyright (C) 2014 Intel Corporation
+ *
+ * Authors:
+ * Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
+ * Leendert van Doorn <leendert@watson.ibm.com>
+ * Dave Safford <safford@watson.ibm.com>
+ * Reiner Sailer <sailer@watson.ibm.com>
+ * Kylene Hall <kjhall@us.ibm.com>
+ *
+ * Maintained by: <tpmdd-devel@lists.sourceforge.net>
+ *
+ * TPM chip management routines.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ */
+
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/freezer.h>
+#include <linux/major.h>
+#include "tpm.h"
+#include "tpm_eventlog.h"
+
+static DECLARE_BITMAP(dev_mask, TPM_NUM_DEVICES);
+static LIST_HEAD(tpm_chip_list);
+static DEFINE_SPINLOCK(driver_lock);
+
+struct class *tpm_class;
+dev_t tpm_devt;
+
+/*
+ * tpm_chip_find_get - return tpm_chip for a given chip number
+ * @chip_num the device number for the chip
+ */
+struct tpm_chip *tpm_chip_find_get(int chip_num)
+{
+	struct tpm_chip *pos, *chip = NULL;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(pos, &tpm_chip_list, list) {
+		if (chip_num != TPM_ANY_NUM && chip_num != pos->dev_num)
+			continue;
+
+		if (try_module_get(pos->pdev->driver->owner)) {
+			chip = pos;
+			break;
+		}
+	}
+	rcu_read_unlock();
+	return chip;
+}
+
+/**
+ * tpm_dev_release() - free chip memory and the device number
+ * @dev: the character device for the TPM chip
+ *
+ * This is used as the release function for the character device.
+ */
+static void tpm_dev_release(struct device *dev)
+{
+	struct tpm_chip *chip = container_of(dev, struct tpm_chip, dev);
+
+	spin_lock(&driver_lock);
+	clear_bit(chip->dev_num, dev_mask);
+	spin_unlock(&driver_lock);
+	kfree(chip);
+}
+
+/**
+ * tpmm_chip_alloc() - allocate a new struct tpm_chip instance
+ * @dev: device to which the chip is associated
+ * @ops: struct tpm_class_ops instance
+ *
+ * Allocates a new struct tpm_chip instance and assigns a free
+ * device number for it. Caller does not have to worry about
+ * freeing the allocated resources. When the devices is removed
+ * devres calls tpmm_chip_remove() to do the job.
+ */
+struct tpm_chip *tpmm_chip_alloc(struct device *dev,
+				 const struct tpm_class_ops *ops)
+{
+	struct tpm_chip *chip;
+
+	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_init(&chip->tpm_mutex);
+	INIT_LIST_HEAD(&chip->list);
+
+	chip->ops = ops;
+
+	spin_lock(&driver_lock);
+	chip->dev_num = find_first_zero_bit(dev_mask, TPM_NUM_DEVICES);
+	spin_unlock(&driver_lock);
+
+	if (chip->dev_num >= TPM_NUM_DEVICES) {
+		dev_err(dev, "No available tpm device numbers\n");
+		kfree(chip);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	set_bit(chip->dev_num, dev_mask);
+
+	scnprintf(chip->devname, sizeof(chip->devname), "tpm%d", chip->dev_num);
+
+	chip->pdev = dev;
+
+	dev_set_drvdata(dev, chip);
+
+	chip->dev.class = tpm_class;
+	chip->dev.release = tpm_dev_release;
+	chip->dev.parent = chip->pdev;
+
+	if (chip->dev_num == 0)
+		chip->dev.devt = MKDEV(MISC_MAJOR, TPM_MINOR);
+	else
+		chip->dev.devt = MKDEV(MAJOR(tpm_devt), chip->dev_num);
+
+	dev_set_name(&chip->dev, "%s", chip->devname);
+
+	device_initialize(&chip->dev);
+
+	chip->cdev.owner = chip->pdev->driver->owner;
+	cdev_init(&chip->cdev, &tpm_fops);
+
+	return chip;
+}
+EXPORT_SYMBOL_GPL(tpmm_chip_alloc);
+
+static int tpm_dev_add_device(struct tpm_chip *chip)
+{
+	int rc;
+
+	rc = device_add(&chip->dev);
+	if (rc) {
+		dev_err(&chip->dev,
+			"unable to device_register() %s, major %d, minor %d, err=%d\n",
+			chip->devname, MAJOR(chip->dev.devt),
+			MINOR(chip->dev.devt), rc);
+
+		return rc;
+	}
+
+	rc = cdev_add(&chip->cdev, chip->dev.devt, 1);
+	if (rc) {
+		dev_err(&chip->dev,
+			"unable to cdev_add() %s, major %d, minor %d, err=%d\n",
+			chip->devname, MAJOR(chip->dev.devt),
+			MINOR(chip->dev.devt), rc);
+
+		device_unregister(&chip->dev);
+		return rc;
+	}
+
+	return rc;
+}
+
+static void tpm_dev_del_device(struct tpm_chip *chip)
+{
+	cdev_del(&chip->cdev);
+	device_unregister(&chip->dev);
+}
+
+/*
+ * tpm_chip_register() - create a character device for the TPM chip
+ * @chip: TPM chip to use.
+ *
+ * Creates a character device for the TPM chip and adds sysfs interfaces for
+ * the device, PPI and TCPA. As the last step this function adds the
+ * chip to the list of TPM chips available for use.
+ *
+ * NOTE: This function should be only called after the chip initialization
+ * is complete.
+ *
+ * Called from tpm_<specific>.c probe function only for devices
+ * the driver has determined it should claim.  Prior to calling
+ * this function the specific probe function has called pci_enable_device
+ * upon errant exit from this function specific probe function should call
+ * pci_disable_device
+ */
+int tpm_chip_register(struct tpm_chip *chip)
+{
+	int rc;
+
+	rc = tpm_dev_add_device(chip);
+	if (rc)
+		return rc;
+
+	/* Populate sysfs for TPM1 devices. */
+	if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) {
+		rc = tpm_sysfs_add_device(chip);
+		if (rc)
+			goto del_misc;
+
+		rc = tpm_add_ppi(chip);
+		if (rc)
+			goto del_sysfs;
+
+		chip->bios_dir = tpm_bios_log_setup(chip->devname);
+	}
+
+	/* Make the chip available. */
+	spin_lock(&driver_lock);
+	list_add_rcu(&chip->list, &tpm_chip_list);
+	spin_unlock(&driver_lock);
+
+	chip->flags |= TPM_CHIP_FLAG_REGISTERED;
+
+	return 0;
+del_sysfs:
+	tpm_sysfs_del_device(chip);
+del_misc:
+	tpm_dev_del_device(chip);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(tpm_chip_register);
+
+/*
+ * tpm_chip_unregister() - release the TPM driver
+ * @chip: TPM chip to use.
+ *
+ * Takes the chip first away from the list of available TPM chips and then
+ * cleans up all the resources reserved by tpm_chip_register().
+ *
+ * NOTE: This function should be only called before deinitializing chip
+ * resources.
+ */
+void tpm_chip_unregister(struct tpm_chip *chip)
+{
+	if (!(chip->flags & TPM_CHIP_FLAG_REGISTERED))
+		return;
+
+	spin_lock(&driver_lock);
+	list_del_rcu(&chip->list);
+	spin_unlock(&driver_lock);
+	synchronize_rcu();
+
+	if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) {
+		if (chip->bios_dir)
+			tpm_bios_log_teardown(chip->bios_dir);
+		tpm_remove_ppi(chip);
+		tpm_sysfs_del_device(chip);
+	}
+
+	tpm_dev_del_device(chip);
+}
+EXPORT_SYMBOL_GPL(tpm_chip_unregister);

drivers/char/tpm/tpm-dev.c

@@ -17,7 +17,6 @@
  * License.
  *
  */
-#include <linux/miscdevice.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 #include "tpm.h"
@@ -54,16 +53,15 @@ static void timeout_work(struct work_struct *work)
 
 static int tpm_open(struct inode *inode, struct file *file)
 {
-	struct miscdevice *misc = file->private_data;
-	struct tpm_chip *chip = container_of(misc, struct tpm_chip,
-					     vendor.miscdev);
+	struct tpm_chip *chip =
+		container_of(inode->i_cdev, struct tpm_chip, cdev);
 	struct file_priv *priv;
 
 	/* It's assured that the chip will be opened just once,
 	 * by the check of is_open variable, which is protected
 	 * by driver_lock. */
 	if (test_and_set_bit(0, &chip->is_open)) {
-		dev_dbg(chip->dev, "Another process owns this TPM\n");
+		dev_dbg(chip->pdev, "Another process owns this TPM\n");
 		return -EBUSY;
 	}
 
@@ -81,7 +79,7 @@ static int tpm_open(struct inode *inode, struct file *file)
 	INIT_WORK(&priv->work, timeout_work);
 
 	file->private_data = priv;
-	get_device(chip->dev);
+	get_device(chip->pdev);
 	return 0;
 }
 
@@ -168,12 +166,12 @@ static int tpm_release(struct inode *inode, struct file *file)
 	file->private_data = NULL;
 	atomic_set(&priv->data_pending, 0);
 	clear_bit(0, &priv->chip->is_open);
-	put_device(priv->chip->dev);
+	put_device(priv->chip->pdev);
 	kfree(priv);
 	return 0;
 }
 
-static const struct file_operations tpm_fops = {
+const struct file_operations tpm_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.open = tpm_open,
@@ -182,32 +180,4 @@ static const struct file_operations tpm_fops = {
 	.release = tpm_release,
 };
 
-int tpm_dev_add_device(struct tpm_chip *chip)
-{
-	int rc;
 
-	chip->vendor.miscdev.fops = &tpm_fops;
-	if (chip->dev_num == 0)
-		chip->vendor.miscdev.minor = TPM_MINOR;
-	else
-		chip->vendor.miscdev.minor = MISC_DYNAMIC_MINOR;
-
-	chip->vendor.miscdev.name = chip->devname;
-	chip->vendor.miscdev.parent = chip->dev;
-
-	rc = misc_register(&chip->vendor.miscdev);
-	if (rc) {
-		chip->vendor.miscdev.name = NULL;
-		dev_err(chip->dev,
-			"unable to misc_register %s, minor %d err=%d\n",
-			chip->vendor.miscdev.name,
-			chip->vendor.miscdev.minor, rc);
-	}
-	return rc;
-}
-
-void tpm_dev_del_device(struct tpm_chip *chip)
-{
-	if (chip->vendor.miscdev.name)
-		misc_deregister(&chip->vendor.miscdev);
-}

drivers/char/tpm/tpm-sysfs.c

@@ -20,25 +20,6 @@
 #include <linux/device.h>
 #include "tpm.h"
 
-/* XXX for now this helper is duplicated in tpm-interface.c */
-static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd,
-			    int len, const char *desc)
-{
-	int err;
-
-	len = tpm_transmit(chip, (u8 *) cmd, len);
-	if (len <  0)
-		return len;
-	else if (len < TPM_HEADER_SIZE)
-		return -EFAULT;
-
-	err = be32_to_cpu(cmd->header.out.return_code);
-	if (err != 0 && desc)
-		dev_err(chip->dev, "A TPM error (%d) occurred %s\n", err, desc);
-
-	return err;
-}
-
 #define READ_PUBEK_RESULT_SIZE 314
 #define TPM_ORD_READPUBEK cpu_to_be32(124)
 static struct tpm_input_header tpm_readpubek_header = {
@@ -58,7 +39,7 @@ static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
 	struct tpm_chip *chip = dev_get_drvdata(dev);
 
 	tpm_cmd.header.in = tpm_readpubek_header;
-	err = transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,
+	err = tpm_transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,
 			       "attempting to read the PUBEK");
 	if (err)
 		goto out;
@@ -303,16 +284,16 @@ static const struct attribute_group tpm_dev_group = {
 int tpm_sysfs_add_device(struct tpm_chip *chip)
 {
 	int err;
-	err = sysfs_create_group(&chip->dev->kobj,
+	err = sysfs_create_group(&chip->pdev->kobj,
 				 &tpm_dev_group);
 
 	if (err)
-		dev_err(chip->dev,
+		dev_err(chip->pdev,
 			"failed to create sysfs attributes, %d\n", err);
 	return err;
 }
 
 void tpm_sysfs_del_device(struct tpm_chip *chip)
 {
-	sysfs_remove_group(&chip->dev->kobj, &tpm_dev_group);
+	sysfs_remove_group(&chip->pdev->kobj, &tpm_dev_group);
 }

drivers/char/tpm/tpm.h

@@ -23,10 +23,11 @@
 #include <linux/fs.h>
 #include <linux/mutex.h>
 #include <linux/sched.h>
-#include <linux/miscdevice.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/tpm.h>
+#include <linux/acpi.h>
+#include <linux/cdev.h>
 
 enum tpm_const {
 	TPM_MINOR = 224,	/* officially assigned */
@@ -61,6 +62,59 @@ enum tpm_duration {
 #define TPM_ERR_INVALID_POSTINIT 38
 
 #define TPM_HEADER_SIZE		10
+
+enum tpm2_const {
+	TPM2_PLATFORM_PCR	= 24,
+	TPM2_PCR_SELECT_MIN	= ((TPM2_PLATFORM_PCR + 7) / 8),
+	TPM2_TIMEOUT_A		= 750,
+	TPM2_TIMEOUT_B		= 2000,
+	TPM2_TIMEOUT_C		= 200,
+	TPM2_TIMEOUT_D		= 30,
+	TPM2_DURATION_SHORT	= 20,
+	TPM2_DURATION_MEDIUM	= 750,
+	TPM2_DURATION_LONG	= 2000,
+};
+
+enum tpm2_structures {
+	TPM2_ST_NO_SESSIONS	= 0x8001,
+	TPM2_ST_SESSIONS	= 0x8002,
+};
+
+enum tpm2_return_codes {
+	TPM2_RC_INITIALIZE	= 0x0100,
+	TPM2_RC_TESTING		= 0x090A,
+	TPM2_RC_DISABLED	= 0x0120,
+};
+
+enum tpm2_algorithms {
+	TPM2_ALG_SHA1		= 0x0004,
+};
+
+enum tpm2_command_codes {
+	TPM2_CC_FIRST		= 0x011F,
+	TPM2_CC_SELF_TEST	= 0x0143,
+	TPM2_CC_STARTUP		= 0x0144,
+	TPM2_CC_SHUTDOWN	= 0x0145,
+	TPM2_CC_GET_CAPABILITY	= 0x017A,
+	TPM2_CC_GET_RANDOM	= 0x017B,
+	TPM2_CC_PCR_READ	= 0x017E,
+	TPM2_CC_PCR_EXTEND	= 0x0182,
+	TPM2_CC_LAST		= 0x018F,
+};
+
+enum tpm2_permanent_handles {
+	TPM2_RS_PW		= 0x40000009,
+};
+
+enum tpm2_capabilities {
+	TPM2_CAP_TPM_PROPERTIES = 6,
+};
+
+enum tpm2_startup_types {
+	TPM2_SU_CLEAR	= 0x0000,
+	TPM2_SU_STATE	= 0x0001,
+};
+
 struct tpm_chip;
 
 struct tpm_vendor_specific {
@@ -73,7 +127,6 @@ struct tpm_vendor_specific {
 	int region_size;
 	int have_region;
 
-	struct miscdevice miscdev;
 	struct list_head list;
 	int locality;
 	unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
@@ -88,15 +141,27 @@ struct tpm_vendor_specific {
 	u16 manufacturer_id;
 };
 
-#define TPM_VPRIV(c)	(c)->vendor.priv
+#define TPM_VPRIV(c)     ((c)->vendor.priv)
 
 #define TPM_VID_INTEL    0x8086
 #define TPM_VID_WINBOND  0x1050
 #define TPM_VID_STM      0x104A
 
+#define TPM_PPI_VERSION_LEN		3
+
+enum tpm_chip_flags {
+	TPM_CHIP_FLAG_REGISTERED	= BIT(0),
+	TPM_CHIP_FLAG_PPI		= BIT(1),
+	TPM_CHIP_FLAG_TPM2		= BIT(2),
+};
+
 struct tpm_chip {
-	struct device *dev;	/* Device stuff */
+	struct device *pdev;	/* Device stuff */
+	struct device dev;
+	struct cdev cdev;
+
 	const struct tpm_class_ops *ops;
+	unsigned int flags;
 
 	int dev_num;		/* /dev/tpm# */
 	char devname[7];
@@ -109,15 +174,19 @@ struct tpm_chip {
 
 	struct dentry **bios_dir;
 
+#ifdef CONFIG_ACPI
+	acpi_handle acpi_dev_handle;
+	char ppi_version[TPM_PPI_VERSION_LEN + 1];
+#endif /* CONFIG_ACPI */
+
 	struct list_head list;
-	void (*release) (struct device *);
 };
 
 #define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor)
 
 static inline void tpm_chip_put(struct tpm_chip *chip)
 {
-	module_put(chip->dev->driver->owner);
+	module_put(chip->pdev->driver->owner);
 }
 
 static inline int tpm_read_index(int base, int index)
@@ -313,40 +382,57 @@ struct tpm_cmd_t {
 	tpm_cmd_params	params;
 } __packed;
 
-ssize_t	tpm_getcap(struct device *, __be32, cap_t *, const char *);
+extern struct class *tpm_class;
+extern dev_t tpm_devt;
+extern const struct file_operations tpm_fops;
 
+ssize_t	tpm_getcap(struct device *, __be32, cap_t *, const char *);
 ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
 		     size_t bufsiz);
+ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len,
+			 const char *desc);
 extern int tpm_get_timeouts(struct tpm_chip *);
 extern void tpm_gen_interrupt(struct tpm_chip *);
 extern int tpm_do_selftest(struct tpm_chip *);
 extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
-extern struct tpm_chip* tpm_register_hardware(struct device *,
-					      const struct tpm_class_ops *ops);
-extern void tpm_dev_vendor_release(struct tpm_chip *);
-extern void tpm_remove_hardware(struct device *);
 extern int tpm_pm_suspend(struct device *);
 extern int tpm_pm_resume(struct device *);
 extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
 			     wait_queue_head_t *, bool);
 
-int tpm_dev_add_device(struct tpm_chip *chip);
-void tpm_dev_del_device(struct tpm_chip *chip);
+struct tpm_chip *tpm_chip_find_get(int chip_num);
+extern struct tpm_chip *tpmm_chip_alloc(struct device *dev,
+				       const struct tpm_class_ops *ops);
+extern int tpm_chip_register(struct tpm_chip *chip);
+extern void tpm_chip_unregister(struct tpm_chip *chip);
+
 int tpm_sysfs_add_device(struct tpm_chip *chip);
 void tpm_sysfs_del_device(struct tpm_chip *chip);
 
 int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
 
 #ifdef CONFIG_ACPI
-extern int tpm_add_ppi(struct kobject *);
-extern void tpm_remove_ppi(struct kobject *);
+extern int tpm_add_ppi(struct tpm_chip *chip);
+extern void tpm_remove_ppi(struct tpm_chip *chip);
 #else
-static inline int tpm_add_ppi(struct kobject *parent)
+static inline int tpm_add_ppi(struct tpm_chip *chip)
 {
 	return 0;
 }
 
-static inline void tpm_remove_ppi(struct kobject *parent)
+static inline void tpm_remove_ppi(struct tpm_chip *chip)
 {
 }
 #endif
+
+int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
+int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash);
+int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
+ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
+			u32 *value, const char *desc);
+
+extern int tpm2_startup(struct tpm_chip *chip, u16 startup_type);
+extern int tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
+extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32);
+extern int tpm2_do_selftest(struct tpm_chip *chip);
+extern int tpm2_gen_interrupt(struct tpm_chip *chip, bool quiet);

drivers/char/tpm/tpm_atmel.c

@@ -49,7 +49,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	for (i = 0; i < 6; i++) {
 		status = ioread8(chip->vendor.iobase + 1);
 		if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-			dev_err(chip->dev, "error reading header\n");
+			dev_err(chip->pdev, "error reading header\n");
 			return -EIO;
 		}
 		*buf++ = ioread8(chip->vendor.iobase);
@@ -60,12 +60,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	size = be32_to_cpu(*native_size);
 
 	if (count < size) {
-		dev_err(chip->dev,
+		dev_err(chip->pdev,
 			"Recv size(%d) less than available space\n", size);
 		for (; i < size; i++) {	/* clear the waiting data anyway */
 			status = ioread8(chip->vendor.iobase + 1);
 			if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-				dev_err(chip->dev, "error reading data\n");
+				dev_err(chip->pdev, "error reading data\n");
 				return -EIO;
 			}
 		}
@@ -76,7 +76,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	for (; i < size; i++) {
 		status = ioread8(chip->vendor.iobase + 1);
 		if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-			dev_err(chip->dev, "error reading data\n");
+			dev_err(chip->pdev, "error reading data\n");
 			return -EIO;
 		}
 		*buf++ = ioread8(chip->vendor.iobase);
@@ -86,7 +86,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	status = ioread8(chip->vendor.iobase + 1);
 
 	if (status & ATML_STATUS_DATA_AVAIL) {
-		dev_err(chip->dev, "data available is stuck\n");
+		dev_err(chip->pdev, "data available is stuck\n");
 		return -EIO;
 	}
 
@@ -97,9 +97,9 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
 {
 	int i;
 
-	dev_dbg(chip->dev, "tpm_atml_send:\n");
+	dev_dbg(chip->pdev, "tpm_atml_send:\n");
 	for (i = 0; i < count; i++) {
-		dev_dbg(chip->dev, "%d 0x%x(%d)\n",  i, buf[i], buf[i]);
+		dev_dbg(chip->pdev, "%d 0x%x(%d)\n",  i, buf[i], buf[i]);
  		iowrite8(buf[i], chip->vendor.iobase);
 	}
 
@@ -138,11 +138,11 @@ static void atml_plat_remove(void)
 	struct tpm_chip *chip = dev_get_drvdata(&pdev->dev);
 
 	if (chip) {
+		tpm_chip_unregister(chip);
 		if (chip->vendor.have_region)
 			atmel_release_region(chip->vendor.base,
 					     chip->vendor.region_size);
 		atmel_put_base_addr(chip->vendor.iobase);
-		tpm_remove_hardware(chip->dev);
 		platform_device_unregister(pdev);
 	}
 }
@@ -183,8 +183,9 @@ static int __init init_atmel(void)
 		goto err_rel_reg;
 	}
 
-	if (!(chip = tpm_register_hardware(&pdev->dev, &tpm_atmel))) {
-		rc = -ENODEV;
+	chip = tpmm_chip_alloc(&pdev->dev, &tpm_atmel);
+	if (IS_ERR(chip)) {
+		rc = PTR_ERR(chip);
 		goto err_unreg_dev;
 	}
 
@@ -193,6 +194,10 @@ static int __init init_atmel(void)
 	chip->vendor.have_region = have_region;
 	chip->vendor.region_size = region_size;
 
+	rc = tpm_chip_register(chip);
+	if (rc)
+		goto err_unreg_dev;
+
 	return 0;
 
 err_unreg_dev:

drivers/char/tpm/tpm_crb.c

+/*
+ * Copyright (C) 2014 Intel Corporation
+ *
+ * Authors:
+ * Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
+ *
+ * Maintained by: <tpmdd-devel@lists.sourceforge.net>
+ *
+ * This device driver implements the TPM interface as defined in
+ * the TCG CRB 2.0 TPM specification.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include <linux/acpi.h>
+#include <linux/highmem.h>
+#include <linux/rculist.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include "tpm.h"
+
+#define ACPI_SIG_TPM2 "TPM2"
+
+static const u8 CRB_ACPI_START_UUID[] = {
+	/* 0000 */ 0xAB, 0x6C, 0xBF, 0x6B, 0x63, 0x54, 0x14, 0x47,
+	/* 0008 */ 0xB7, 0xCD, 0xF0, 0x20, 0x3C, 0x03, 0x68, 0xD4
+};
+
+enum crb_defaults {
+	CRB_ACPI_START_REVISION_ID = 1,
+	CRB_ACPI_START_INDEX = 1,
+};
+
+enum crb_start_method {
+	CRB_SM_ACPI_START = 2,
+	CRB_SM_CRB = 7,
+	CRB_SM_CRB_WITH_ACPI_START = 8,
+};
+
+struct acpi_tpm2 {
+	struct acpi_table_header hdr;
+	u16 platform_class;
+	u16 reserved;
+	u64 control_area_pa;
+	u32 start_method;
+} __packed;
+
+enum crb_ca_request {
+	CRB_CA_REQ_GO_IDLE	= BIT(0),
+	CRB_CA_REQ_CMD_READY	= BIT(1),
+};
+
+enum crb_ca_status {
+	CRB_CA_STS_ERROR	= BIT(0),
+	CRB_CA_STS_TPM_IDLE	= BIT(1),
+};
+
+enum crb_start {
+	CRB_START_INVOKE	= BIT(0),
+};
+
+enum crb_cancel {
+	CRB_CANCEL_INVOKE	= BIT(0),
+};
+
+struct crb_control_area {
+	u32 req;
+	u32 sts;
+	u32 cancel;
+	u32 start;
+	u32 int_enable;
+	u32 int_sts;
+	u32 cmd_size;
+	u64 cmd_pa;
+	u32 rsp_size;
+	u64 rsp_pa;
+} __packed;
+
+enum crb_status {
+	CRB_STS_COMPLETE	= BIT(0),
+};
+
+enum crb_flags {
+	CRB_FL_ACPI_START	= BIT(0),
+	CRB_FL_CRB_START	= BIT(1),
+};
+
+struct crb_priv {
+	unsigned int flags;
+	struct crb_control_area __iomem *cca;
+	u8 __iomem *cmd;
+	u8 __iomem *rsp;
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int crb_resume(struct device *dev)
+{
+	int rc;
+	struct tpm_chip *chip = dev_get_drvdata(dev);
+
+	rc = tpm2_shutdown(chip, TPM2_SU_STATE);
+	if (!rc)
+		rc = tpm2_do_selftest(chip);
+
+	return rc;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(crb_pm, tpm_pm_suspend, crb_resume);
+
+static u8 crb_status(struct tpm_chip *chip)
+{
+	struct crb_priv *priv = chip->vendor.priv;
+	u8 sts = 0;
+
+	if ((le32_to_cpu(ioread32(&priv->cca->start)) & CRB_START_INVOKE) !=
+	    CRB_START_INVOKE)
+		sts |= CRB_STS_COMPLETE;
+
+	return sts;
+}
+
+static int crb_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+	struct crb_priv *priv = chip->vendor.priv;
+	unsigned int expected;
+
+	/* sanity check */
+	if (count < 6)
+		return -EIO;
+
+	if (le32_to_cpu(ioread32(&priv->cca->sts)) & CRB_CA_STS_ERROR)
+		return -EIO;
+
+	memcpy_fromio(buf, priv->rsp, 6);
+	expected = be32_to_cpup((__be32 *) &buf[2]);
+
+	if (expected > count)
+		return -EIO;
+
+	memcpy_fromio(&buf[6], &priv->rsp[6], expected - 6);
+
+	return expected;
+}
+
+static int crb_do_acpi_start(struct tpm_chip *chip)
+{
+	union acpi_object *obj;
+	int rc;
+
+	obj = acpi_evaluate_dsm(chip->acpi_dev_handle,
+				CRB_ACPI_START_UUID,
+				CRB_ACPI_START_REVISION_ID,
+				CRB_ACPI_START_INDEX,
+				NULL);
+	if (!obj)
+		return -ENXIO;
+	rc = obj->integer.value == 0 ? 0 : -ENXIO;
+	ACPI_FREE(obj);
+	return rc;
+}
+
+static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len)
+{
+	struct crb_priv *priv = chip->vendor.priv;
+	int rc = 0;
+
+	if (len > le32_to_cpu(ioread32(&priv->cca->cmd_size))) {
+		dev_err(&chip->dev,
+			"invalid command count value %x %zx\n",
+			(unsigned int) len,
+			(size_t) le32_to_cpu(ioread32(&priv->cca->cmd_size)));
+		return -E2BIG;
+	}
+
+	memcpy_toio(priv->cmd, buf, len);
+
+	/* Make sure that cmd is populated before issuing start. */
+	wmb();
+
+	if (priv->flags & CRB_FL_CRB_START)
+		iowrite32(cpu_to_le32(CRB_START_INVOKE), &priv->cca->start);
+
+	if (priv->flags & CRB_FL_ACPI_START)
+		rc = crb_do_acpi_start(chip);
+
+	return rc;
+}
+
+static void crb_cancel(struct tpm_chip *chip)
+{
+	struct crb_priv *priv = chip->vendor.priv;
+
+	iowrite32(cpu_to_le32(CRB_CANCEL_INVOKE), &priv->cca->cancel);
+
+	/* Make sure that cmd is populated before issuing cancel. */
+	wmb();
+
+	if ((priv->flags & CRB_FL_ACPI_START) && crb_do_acpi_start(chip))
+		dev_err(&chip->dev, "ACPI Start failed\n");
+
+	iowrite32(0, &priv->cca->cancel);
+}
+
+static bool crb_req_canceled(struct tpm_chip *chip, u8 status)
+{
+	struct crb_priv *priv = chip->vendor.priv;
+	u32 cancel = le32_to_cpu(ioread32(&priv->cca->cancel));
+
+	return (cancel & CRB_CANCEL_INVOKE) == CRB_CANCEL_INVOKE;
+}
+
+static const struct tpm_class_ops tpm_crb = {
+	.status = crb_status,
+	.recv = crb_recv,
+	.send = crb_send,
+	.cancel = crb_cancel,
+	.req_canceled = crb_req_canceled,
+	.req_complete_mask = CRB_STS_COMPLETE,
+	.req_complete_val = CRB_STS_COMPLETE,
+};
+
+static int crb_acpi_add(struct acpi_device *device)
+{
+	struct tpm_chip *chip;
+	struct acpi_tpm2 *buf;
+	struct crb_priv *priv;
+	struct device *dev = &device->dev;
+	acpi_status status;
+	u32 sm;
+	u64 pa;
+	int rc;
+
+	chip = tpmm_chip_alloc(dev, &tpm_crb);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
+
+	chip->flags = TPM_CHIP_FLAG_TPM2;
+
+	status = acpi_get_table(ACPI_SIG_TPM2, 1,
+				(struct acpi_table_header **) &buf);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "failed to get TPM2 ACPI table\n");
+		return -ENODEV;
+	}
+
+	if (buf->hdr.length < sizeof(struct acpi_tpm2)) {
+		dev_err(dev, "TPM2 ACPI table has wrong size");
+		return -EINVAL;
+	}
+
+	priv = (struct crb_priv *) devm_kzalloc(dev, sizeof(struct crb_priv),
+						GFP_KERNEL);
+	if (!priv) {
+		dev_err(dev, "failed to devm_kzalloc for private data\n");
+		return -ENOMEM;
+	}
+
+	sm = le32_to_cpu(buf->start_method);
+
+	/* The reason for the extra quirk is that the PTT in 4th Gen Core CPUs
+	 * report only ACPI start but in practice seems to require both
+	 * ACPI start and CRB start.
+	 */
+	if (sm == CRB_SM_CRB || sm == CRB_SM_CRB_WITH_ACPI_START ||
+	    !strcmp(acpi_device_hid(device), "MSFT0101"))
+		priv->flags |= CRB_FL_CRB_START;
+
+	if (sm == CRB_SM_ACPI_START || sm == CRB_SM_CRB_WITH_ACPI_START)
+		priv->flags |= CRB_FL_ACPI_START;
+
+	priv->cca = (struct crb_control_area __iomem *)
+		devm_ioremap_nocache(dev, buf->control_area_pa, 0x1000);
+	if (!priv->cca) {
+		dev_err(dev, "ioremap of the control area failed\n");
+		return -ENOMEM;
+	}
+
+	memcpy_fromio(&pa, &priv->cca->cmd_pa, 8);
+	pa = le64_to_cpu(pa);
+	priv->cmd = devm_ioremap_nocache(dev, le64_to_cpu(pa),
+					 ioread32(&priv->cca->cmd_size));
+	if (!priv->cmd) {
+		dev_err(dev, "ioremap of the command buffer failed\n");
+		return -ENOMEM;
+	}
+
+	memcpy_fromio(&pa, &priv->cca->rsp_pa, 8);
+	pa = le64_to_cpu(pa);
+	priv->rsp = devm_ioremap_nocache(dev, le64_to_cpu(pa),
+					 ioread32(&priv->cca->rsp_size));
+	if (!priv->rsp) {
+		dev_err(dev, "ioremap of the response buffer failed\n");
+		return -ENOMEM;
+	}
+
+	chip->vendor.priv = priv;
+
+	/* Default timeouts and durations */
+	chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
+	chip->vendor.timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
+	chip->vendor.timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
+	chip->vendor.timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
+	chip->vendor.duration[TPM_SHORT] =
+		msecs_to_jiffies(TPM2_DURATION_SHORT);
+	chip->vendor.duration[TPM_MEDIUM] =
+		msecs_to_jiffies(TPM2_DURATION_MEDIUM);
+	chip->vendor.duration[TPM_LONG] =
+		msecs_to_jiffies(TPM2_DURATION_LONG);
+
+	chip->acpi_dev_handle = device->handle;
+
+	rc = tpm2_do_selftest(chip);
+	if (rc)
+		return rc;
+
+	return tpm_chip_register(chip);
+}
+
+static int crb_acpi_remove(struct acpi_device *device)
+{
+	struct device *dev = &device->dev;
+	struct tpm_chip *chip = dev_get_drvdata(dev);
+
+	tpm_chip_unregister(chip);
+	return 0;
+}
+
+static struct acpi_device_id crb_device_ids[] = {
+	{"MSFT0101", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, crb_device_ids);
+
+static struct acpi_driver crb_acpi_driver = {
+	.name = "tpm_crb",
+	.ids = crb_device_ids,
+	.ops = {
+		.add = crb_acpi_add,
+		.remove = crb_acpi_remove,
+	},
+	.drv = {
+		.pm = &crb_pm,
+	},
+};
+
+module_acpi_driver(crb_acpi_driver);
+MODULE_AUTHOR("Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>");
+MODULE_DESCRIPTION("TPM2 Driver");
+MODULE_VERSION("0.1");
+MODULE_LICENSE("GPL");

drivers/char/tpm/tpm_i2c_atmel.c

@@ -52,7 +52,7 @@ struct priv_data {
 static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)
 {
 	struct priv_data *priv = chip->vendor.priv;
-	struct i2c_client *client = to_i2c_client(chip->dev);
+	struct i2c_client *client = to_i2c_client(chip->pdev);
 	s32 status;
 
 	priv->len = 0;
@@ -62,7 +62,7 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)
 
 	status = i2c_master_send(client, buf, len);
 
-	dev_dbg(chip->dev,
+	dev_dbg(chip->pdev,
 		"%s(buf=%*ph len=%0zx) -> sts=%d\n", __func__,
 		(int)min_t(size_t, 64, len), buf, len, status);
 	return status;
@@ -71,7 +71,7 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len)
 static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 {
 	struct priv_data *priv = chip->vendor.priv;
-	struct i2c_client *client = to_i2c_client(chip->dev);
+	struct i2c_client *client = to_i2c_client(chip->pdev);
 	struct tpm_output_header *hdr =
 		(struct tpm_output_header *)priv->buffer;
 	u32 expected_len;
@@ -88,7 +88,7 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 		return -ENOMEM;
 
 	if (priv->len >= expected_len) {
-		dev_dbg(chip->dev,
+		dev_dbg(chip->pdev,
 			"%s early(buf=%*ph count=%0zx) -> ret=%d\n", __func__,
 			(int)min_t(size_t, 64, expected_len), buf, count,
 			expected_len);
@@ -97,7 +97,7 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	}
 
 	rc = i2c_master_recv(client, buf, expected_len);
-	dev_dbg(chip->dev,
+	dev_dbg(chip->pdev,
 		"%s reread(buf=%*ph count=%0zx) -> ret=%d\n", __func__,
 		(int)min_t(size_t, 64, expected_len), buf, count,
 		expected_len);
@@ -106,13 +106,13 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 
 static void i2c_atmel_cancel(struct tpm_chip *chip)
 {
-	dev_err(chip->dev, "TPM operation cancellation was requested, but is not supported");
+	dev_err(chip->pdev, "TPM operation cancellation was requested, but is not supported");
 }
 
 static u8 i2c_atmel_read_status(struct tpm_chip *chip)
 {
 	struct priv_data *priv = chip->vendor.priv;
-	struct i2c_client *client = to_i2c_client(chip->dev);
+	struct i2c_client *client = to_i2c_client(chip->pdev);
 	int rc;
 
 	/* The TPM fails the I2C read until it is ready, so we do the entire
@@ -125,7 +125,7 @@ static u8 i2c_atmel_read_status(struct tpm_chip *chip)
 	/* Once the TPM has completed the command the command remains readable
 	 * until another command is issued. */
 	rc = i2c_master_recv(client, priv->buffer, sizeof(priv->buffer));
-	dev_dbg(chip->dev,
+	dev_dbg(chip->pdev,
 		"%s: sts=%d", __func__, rc);
 	if (rc <= 0)
 		return 0;
@@ -153,21 +153,20 @@ static const struct tpm_class_ops i2c_atmel = {
 static int i2c_atmel_probe(struct i2c_client *client,
 			   const struct i2c_device_id *id)
 {
-	int rc;
 	struct tpm_chip *chip;
 	struct device *dev = &client->dev;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
 		return -ENODEV;
 
-	chip = tpm_register_hardware(dev, &i2c_atmel);
-	if (!chip) {
-		dev_err(dev, "%s() error in tpm_register_hardware\n", __func__);
-		return -ENODEV;
-	}
+	chip = tpmm_chip_alloc(dev, &i2c_atmel);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
 
 	chip->vendor.priv = devm_kzalloc(dev, sizeof(struct priv_data),
 					 GFP_KERNEL);
+	if (!chip->vendor.priv)
+		return -ENOMEM;
 
 	/* Default timeouts */
 	chip->vendor.timeout_a = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT);
@@ -179,33 +178,20 @@ static int i2c_atmel_probe(struct i2c_client *client,
 	/* There is no known way to probe for this device, and all version
 	 * information seems to be read via TPM commands. Thus we rely on the
 	 * TPM startup process in the common code to detect the device. */
-	if (tpm_get_timeouts(chip)) {
-		rc = -ENODEV;
-		goto out_err;
-	}
-
-	if (tpm_do_selftest(chip)) {
-		rc = -ENODEV;
-		goto out_err;
-	}
+	if (tpm_get_timeouts(chip))
+		return -ENODEV;
 
-	return 0;
+	if (tpm_do_selftest(chip))
+		return -ENODEV;
 
-out_err:
-	tpm_dev_vendor_release(chip);
-	tpm_remove_hardware(chip->dev);
-	return rc;
+	return tpm_chip_register(chip);
 }
 
 static int i2c_atmel_remove(struct i2c_client *client)
 {
 	struct device *dev = &(client->dev);
 	struct tpm_chip *chip = dev_get_drvdata(dev);
-
-	if (chip)
-		tpm_dev_vendor_release(chip);
-	tpm_remove_hardware(dev);
-	kfree(chip);
+	tpm_chip_unregister(chip);
 	return 0;
 }
 

drivers/char/tpm/tpm_i2c_infineon.c

@@ -446,7 +446,7 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	/* read first 10 bytes, including tag, paramsize, and result */
 	size = recv_data(chip, buf, TPM_HEADER_SIZE);
 	if (size < TPM_HEADER_SIZE) {
-		dev_err(chip->dev, "Unable to read header\n");
+		dev_err(chip->pdev, "Unable to read header\n");
 		goto out;
 	}
 
@@ -459,14 +459,14 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 	size += recv_data(chip, &buf[TPM_HEADER_SIZE],
 			  expected - TPM_HEADER_SIZE);
 	if (size < expected) {
-		dev_err(chip->dev, "Unable to read remainder of result\n");
+		dev_err(chip->pdev, "Unable to read remainder of result\n");
 		size = -ETIME;
 		goto out;
 	}
 
 	wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c, &status);
 	if (status & TPM_STS_DATA_AVAIL) {	/* retry? */
-		dev_err(chip->dev, "Error left over data\n");
+		dev_err(chip->pdev, "Error left over data\n");
 		size = -EIO;
 		goto out;
 	}
@@ -581,12 +581,9 @@ static int tpm_tis_i2c_init(struct device *dev)
 	int rc = 0;
 	struct tpm_chip *chip;
 
-	chip = tpm_register_hardware(dev, &tpm_tis_i2c);
-	if (!chip) {
-		dev_err(dev, "could not register hardware\n");
-		rc = -ENODEV;
-		goto out_err;
-	}
+	chip = tpmm_chip_alloc(dev, &tpm_tis_i2c);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
 
 	/* Disable interrupts */
 	chip->vendor.irq = 0;
@@ -600,7 +597,7 @@ static int tpm_tis_i2c_init(struct device *dev)
 	if (request_locality(chip, 0) != 0) {
 		dev_err(dev, "could not request locality\n");
 		rc = -ENODEV;
-		goto out_vendor;
+		goto out_err;
 	}
 
 	/* read four bytes from DID_VID register */
@@ -628,21 +625,9 @@ static int tpm_tis_i2c_init(struct device *dev)
 	tpm_get_timeouts(chip);
 	tpm_do_selftest(chip);
 
-	return 0;
-
+	return tpm_chip_register(chip);
 out_release:
 	release_locality(chip, chip->vendor.locality, 1);
-
-out_vendor:
-	/* close file handles */
-	tpm_dev_vendor_release(chip);
-
-	/* remove hardware */
-	tpm_remove_hardware(chip->dev);
-
-	/* reset these pointers, otherwise we oops */
-	chip->dev->release = NULL;
-	chip->release = NULL;
 	tpm_dev.client = NULL;
 out_err:
 	return rc;
@@ -712,17 +697,9 @@ static int tpm_tis_i2c_probe(struct i2c_client *client,
 static int tpm_tis_i2c_remove(struct i2c_client *client)
 {
 	struct tpm_chip *chip = tpm_dev.chip;
-	release_locality(chip, chip->vendor.locality, 1);
 
-	/* close file handles */
-	tpm_dev_vendor_release(chip);
-
-	/* remove hardware */
-	tpm_remove_hardware(chip->dev);
-
-	/* reset these pointers, otherwise we oops */
-	chip->dev->release = NULL;
-	chip->release = NULL;
+	tpm_chip_unregister(chip);
+	release_locality(chip, chip->vendor.locality, 1);
 	tpm_dev.client = NULL;
 
 	return 0;

drivers/char/tpm/tpm_i2c_nuvoton.c

@@ -96,13 +96,13 @@ static s32 i2c_nuvoton_write_buf(struct i2c_client *client, u8 offset, u8 size,
 /* read TPM_STS register */
 static u8 i2c_nuvoton_read_status(struct tpm_chip *chip)
 {
-	struct i2c_client *client = to_i2c_client(chip->dev);
+	struct i2c_client *client = to_i2c_client(chip->pdev);
 	s32 status;
 	u8 data;
 
 	status = i2c_nuvoton_read_buf(client, TPM_STS, 1, &data);
 	if (status <= 0) {
-		dev_err(chip->dev, "%s() error return %d\n", __func__,
+		dev_err(chip->pdev, "%s() error return %d\n", __func__,
 			status);
 		data = TPM_STS_ERR_VAL;
 	}
@@ -127,13 +127,13 @@ static s32 i2c_nuvoton_write_status(struct i2c_client *client, u8 data)
 /* write commandReady to TPM_STS register */
 static void i2c_nuvoton_ready(struct tpm_chip *chip)
 {
-	struct i2c_client *client = to_i2c_client(chip->dev);
+	struct i2c_client *client = to_i2c_client(chip->pdev);
 	s32 status;
 
 	/* this causes the current command to be aborted */
 	status = i2c_nuvoton_write_status(client, TPM_STS_COMMAND_READY);
 	if (status < 0)
-		dev_err(chip->dev,
+		dev_err(chip->pdev,
 			"%s() fail to write TPM_STS.commandReady\n", __func__);
 }
 
@@ -212,7 +212,7 @@ static int i2c_nuvoton_wait_for_stat(struct tpm_chip *chip, u8 mask, u8 value,
 				return 0;
 		} while (time_before(jiffies, stop));
 	}
-	dev_err(chip->dev, "%s(%02x, %02x) -> timeout\n", __func__, mask,
+	dev_err(chip->pdev, "%s(%02x, %02x) -> timeout\n", __func__, mask,
 		value);
 	return -ETIMEDOUT;
 }
@@ -240,7 +240,7 @@ static int i2c_nuvoton_recv_data(struct i2c_client *client,
 					       &chip->vendor.read_queue) == 0) {
 		burst_count = i2c_nuvoton_get_burstcount(client, chip);
 		if (burst_count < 0) {
-			dev_err(chip->dev,
+			dev_err(chip->pdev,
 				"%s() fail to read burstCount=%d\n", __func__,
 				burst_count);
 			return -EIO;
@@ -249,12 +249,12 @@ static int i2c_nuvoton_recv_data(struct i2c_client *client,
 		rc = i2c_nuvoton_read_buf(client, TPM_DATA_FIFO_R,
 					  bytes2read, &buf[size]);
 		if (rc < 0) {
-			dev_err(chip->dev,
+			dev_err(chip->pdev,
 				"%s() fail on i2c_nuvoton_read_buf()=%d\n",
 				__func__, rc);
 			return -EIO;
 		}
-		dev_dbg(chip->dev, "%s(%d):", __func__, bytes2read);
+		dev_dbg(chip->pdev, "%s(%d):", __func__, bytes2read);
 		size += bytes2read;
 	}
 
@@ -264,7 +264,7 @@ static int i2c_nuvoton_recv_data(struct i2c_client *client,
 /* Read TPM command results */
 static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 {
-	struct device *dev = chip->dev;
+	struct device *dev = chip->pdev;
 	struct i2c_client *client = to_i2c_client(dev);
 	s32 rc;
 	int expected, status, burst_count, retries, size = 0;
@@ -334,7 +334,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 		break;
 	}
 	i2c_nuvoton_ready(chip);
-	dev_dbg(chip->dev, "%s() -> %d\n", __func__, size);
+	dev_dbg(chip->pdev, "%s() -> %d\n", __func__, size);
 	return size;
 }
 
@@ -347,7 +347,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
  */
 static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t len)
 {
-	struct device *dev = chip->dev;
+	struct device *dev = chip->pdev;
 	struct i2c_client *client = to_i2c_client(dev);
 	u32 ordinal;
 	size_t count = 0;
@@ -530,14 +530,15 @@ static int i2c_nuvoton_probe(struct i2c_client *client,
 	dev_info(dev, "VID: %04X DID: %02X RID: %02X\n", (u16) vid,
 		 (u8) (vid >> 16), (u8) (vid >> 24));
 
-	chip = tpm_register_hardware(dev, &tpm_i2c);
-	if (!chip) {
-		dev_err(dev, "%s() error in tpm_register_hardware\n", __func__);
-		return -ENODEV;
-	}
+	chip = tpmm_chip_alloc(dev, &tpm_i2c);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
 
 	chip->vendor.priv = devm_kzalloc(dev, sizeof(struct priv_data),
 					 GFP_KERNEL);
+	if (!chip->vendor.priv)
+		return -ENOMEM;
+
 	init_waitqueue_head(&chip->vendor.read_queue);
 	init_waitqueue_head(&chip->vendor.int_queue);
 
@@ -559,7 +560,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client,
 		rc = devm_request_irq(dev, chip->vendor.irq,
 				      i2c_nuvoton_int_handler,
 				      IRQF_TRIGGER_LOW,
-				      chip->vendor.miscdev.name,
+				      chip->devname,
 				      chip);
 		if (rc) {
 			dev_err(dev, "%s() Unable to request irq: %d for use\n",
@@ -584,7 +585,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client,
 							   TPM_DATA_FIFO_W,
 							   1, (u8 *) (&rc));
 				if (rc < 0)
-					goto out_err;
+					return rc;
 				/* TPM_STS <- 0x40 (commandReady) */
 				i2c_nuvoton_ready(chip);
 			} else {
@@ -594,45 +595,29 @@ static int i2c_nuvoton_probe(struct i2c_client *client,
 				 * only TPM_STS_VALID should be set
 				 */
 				if (i2c_nuvoton_read_status(chip) !=
-				    TPM_STS_VALID) {
-					rc = -EIO;
-					goto out_err;
-				}
-			}
+				    TPM_STS_VALID)
+					return -EIO;
 			}
 		}
-
-	if (tpm_get_timeouts(chip)) {
-		rc = -ENODEV;
-		goto out_err;
 	}
 
-	if (tpm_do_selftest(chip)) {
-		rc = -ENODEV;
-		goto out_err;
-	}
+	if (tpm_get_timeouts(chip))
+		return -ENODEV;
 
-	return 0;
+	if (tpm_do_selftest(chip))
+		return -ENODEV;
 
-out_err:
-	tpm_dev_vendor_release(chip);
-	tpm_remove_hardware(chip->dev);
-	return rc;
+	return tpm_chip_register(chip);
 }
 
 static int i2c_nuvoton_remove(struct i2c_client *client)
 {
 	struct device *dev = &(client->dev);
 	struct tpm_chip *chip = dev_get_drvdata(dev);
-
-	if (chip)
-		tpm_dev_vendor_release(chip);
-	tpm_remove_hardware(dev);
-	kfree(chip);
+	tpm_chip_unregister(chip);
 	return 0;
 }
 
-
 static const struct i2c_device_id i2c_nuvoton_id[] = {
 	{I2C_DRIVER_NAME, 0},
 	{}

drivers/char/tpm/tpm_ibmvtpm.c

 /*
  * Copyright (C) 2012 IBM Corporation
  *
- * Author: Ashley Lai <adlai@us.ibm.com>
+ * Author: Ashley Lai <ashleydlai@gmail.com>
  *
  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
  *
@@ -270,8 +270,11 @@ static int ibmvtpm_crq_send_init(struct ibmvtpm_dev *ibmvtpm)
 static int tpm_ibmvtpm_remove(struct vio_dev *vdev)
 {
 	struct ibmvtpm_dev *ibmvtpm = ibmvtpm_get_data(&vdev->dev);
+	struct tpm_chip *chip = dev_get_drvdata(ibmvtpm->dev);
 	int rc = 0;
 
+	tpm_chip_unregister(chip);
+
 	free_irq(vdev->irq, ibmvtpm);
 
 	do {
@@ -290,8 +293,6 @@ static int tpm_ibmvtpm_remove(struct vio_dev *vdev)
 		kfree(ibmvtpm->rtce_buf);
 	}
 
-	tpm_remove_hardware(ibmvtpm->dev);
-
 	kfree(ibmvtpm);
 
 	return 0;
@@ -307,6 +308,14 @@ static int tpm_ibmvtpm_remove(struct vio_dev *vdev)
 static unsigned long tpm_ibmvtpm_get_desired_dma(struct vio_dev *vdev)
 {
 	struct ibmvtpm_dev *ibmvtpm = ibmvtpm_get_data(&vdev->dev);
+
+	/* ibmvtpm initializes at probe time, so the data we are
+	* asking for may not be set yet. Estimate that 4K required
+	* for TCE-mapped buffer in addition to CRQ.
+	*/
+	if (!ibmvtpm)
+		return CRQ_RES_BUF_SIZE + PAGE_SIZE;
+
 	return CRQ_RES_BUF_SIZE + ibmvtpm->rtce_size;
 }
 
@@ -555,11 +564,9 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 	struct tpm_chip *chip;
 	int rc = -ENOMEM, rc1;
 
-	chip = tpm_register_hardware(dev, &tpm_ibmvtpm);
-	if (!chip) {
-		dev_err(dev, "tpm_register_hardware failed\n");
-		return -ENODEV;
-	}
+	chip = tpmm_chip_alloc(dev, &tpm_ibmvtpm);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
 
 	ibmvtpm = kzalloc(sizeof(struct ibmvtpm_dev), GFP_KERNEL);
 	if (!ibmvtpm) {
@@ -629,7 +636,7 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 	if (rc)
 		goto init_irq_cleanup;
 
-	return rc;
+	return tpm_chip_register(chip);
 init_irq_cleanup:
 	do {
 		rc1 = plpar_hcall_norets(H_FREE_CRQ, vio_dev->unit_address);
@@ -644,8 +651,6 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 		kfree(ibmvtpm);
 	}
 
-	tpm_remove_hardware(dev);
-
 	return rc;
 }
 

drivers/char/tpm/tpm_ibmvtpm.h

 /*
  * Copyright (C) 2012 IBM Corporation
  *
- * Author: Ashley Lai <adlai@us.ibm.com>
+ * Author: Ashley Lai <ashleydlai@gmail.com>
  *
  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
  *

drivers/char/tpm/tpm_infineon.c

@@ -195,9 +195,9 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
 	}
 	if (i == TPM_MAX_TRIES) {	/* timeout occurs */
 		if (wait_for_bit == STAT_XFE)
-			dev_err(chip->dev, "Timeout in wait(STAT_XFE)\n");
+			dev_err(chip->pdev, "Timeout in wait(STAT_XFE)\n");
 		if (wait_for_bit == STAT_RDA)
-			dev_err(chip->dev, "Timeout in wait(STAT_RDA)\n");
+			dev_err(chip->pdev, "Timeout in wait(STAT_RDA)\n");
 		return -EIO;
 	}
 	return 0;
@@ -220,7 +220,7 @@ static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
 static void tpm_wtx(struct tpm_chip *chip)
 {
 	number_of_wtx++;
-	dev_info(chip->dev, "Granting WTX (%02d / %02d)\n",
+	dev_info(chip->pdev, "Granting WTX (%02d / %02d)\n",
 		 number_of_wtx, TPM_MAX_WTX_PACKAGES);
 	wait_and_send(chip, TPM_VL_VER);
 	wait_and_send(chip, TPM_CTRL_WTX);
@@ -231,7 +231,7 @@ static void tpm_wtx(struct tpm_chip *chip)
 
 static void tpm_wtx_abort(struct tpm_chip *chip)
 {
-	dev_info(chip->dev, "Aborting WTX\n");
+	dev_info(chip->pdev, "Aborting WTX\n");
 	wait_and_send(chip, TPM_VL_VER);
 	wait_and_send(chip, TPM_CTRL_WTX_ABORT);
 	wait_and_send(chip, 0x00);
@@ -257,7 +257,7 @@ static int tpm_inf_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	}
 
 	if (buf[0] != TPM_VL_VER) {
-		dev_err(chip->dev,
+		dev_err(chip->pdev,
 			"Wrong transport protocol implementation!\n");
 		return -EIO;
 	}
@@ -272,7 +272,7 @@ static int tpm_inf_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 		}
 
 		if ((size == 0x6D00) && (buf[1] == 0x80)) {
-			dev_err(chip->dev, "Error handling on vendor layer!\n");
+			dev_err(chip->pdev, "Error handling on vendor layer!\n");
 			return -EIO;
 		}
 
@@ -284,7 +284,7 @@ static int tpm_inf_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	}
 
 	if (buf[1] == TPM_CTRL_WTX) {
-		dev_info(chip->dev, "WTX-package received\n");
+		dev_info(chip->pdev, "WTX-package received\n");
 		if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
 			tpm_wtx(chip);
 			goto recv_begin;
@@ -295,14 +295,14 @@ static int tpm_inf_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	}
 
 	if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
-		dev_info(chip->dev, "WTX-abort acknowledged\n");
+		dev_info(chip->pdev, "WTX-abort acknowledged\n");
 		return size;
 	}
 
 	if (buf[1] == TPM_CTRL_ERROR) {
-		dev_err(chip->dev, "ERROR-package received:\n");
+		dev_err(chip->pdev, "ERROR-package received:\n");
 		if (buf[4] == TPM_INF_NAK)
-			dev_err(chip->dev,
+			dev_err(chip->pdev,
 				"-> Negative acknowledgement"
 				" - retransmit command!\n");
 		return -EIO;
@@ -321,7 +321,7 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
 
 	ret = empty_fifo(chip, 1);
 	if (ret) {
-		dev_err(chip->dev, "Timeout while clearing FIFO\n");
+		dev_err(chip->pdev, "Timeout while clearing FIFO\n");
 		return -EIO;
 	}
 
@@ -546,7 +546,14 @@ static int tpm_inf_pnp_probe(struct pnp_dev *dev,
 			 vendorid[0], vendorid[1],
 			 productid[0], productid[1], chipname);
 
-		if (!(chip = tpm_register_hardware(&dev->dev, &tpm_inf)))
+		chip = tpmm_chip_alloc(&dev->dev, &tpm_inf);
+		if (IS_ERR(chip)) {
+			rc = PTR_ERR(chip);
+			goto err_release_region;
+		}
+
+		rc = tpm_chip_register(chip);
+		if (rc)
 			goto err_release_region;
 
 		return 0;
@@ -572,7 +579,8 @@ static void tpm_inf_pnp_remove(struct pnp_dev *dev)
 {
 	struct tpm_chip *chip = pnp_get_drvdata(dev);
 
-	if (chip) {
+	tpm_chip_unregister(chip);
+
 	if (tpm_dev.iotype == TPM_INF_IO_PORT) {
 		release_region(tpm_dev.data_regs, tpm_dev.data_size);
 		release_region(tpm_dev.config_port,
@@ -581,9 +589,6 @@ static void tpm_inf_pnp_remove(struct pnp_dev *dev)
 		iounmap(tpm_dev.mem_base);
 		release_mem_region(tpm_dev.map_base, tpm_dev.map_size);
 	}
-		tpm_dev_vendor_release(chip);
-		tpm_remove_hardware(chip->dev);
-	}
 }
 
 static int tpm_inf_pnp_suspend(struct pnp_dev *dev, pm_message_t pm_state)

drivers/char/tpm/tpm_nsc.c

@@ -113,7 +113,7 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
 	}
 	while (time_before(jiffies, stop));
 
-	dev_info(chip->dev, "wait for ready failed\n");
+	dev_info(chip->pdev, "wait for ready failed\n");
 	return -EBUSY;
 }
 
@@ -129,12 +129,12 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 		return -EIO;
 
 	if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) {
-		dev_err(chip->dev, "F0 timeout\n");
+		dev_err(chip->pdev, "F0 timeout\n");
 		return -EIO;
 	}
 	if ((data =
 	     inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
-		dev_err(chip->dev, "not in normal mode (0x%x)\n",
+		dev_err(chip->pdev, "not in normal mode (0x%x)\n",
 			data);
 		return -EIO;
 	}
@@ -143,7 +143,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	for (p = buffer; p < &buffer[count]; p++) {
 		if (wait_for_stat
 		    (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) {
-			dev_err(chip->dev,
+			dev_err(chip->pdev,
 				"OBF timeout (while reading data)\n");
 			return -EIO;
 		}
@@ -154,11 +154,11 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 
 	if ((data & NSC_STATUS_F0) == 0 &&
 	(wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) {
-		dev_err(chip->dev, "F0 not set\n");
+		dev_err(chip->pdev, "F0 not set\n");
 		return -EIO;
 	}
 	if ((data = inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_EOC) {
-		dev_err(chip->dev,
+		dev_err(chip->pdev,
 			"expected end of command(0x%x)\n", data);
 		return -EIO;
 	}
@@ -189,19 +189,19 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
 		return -EIO;
 
 	if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
-		dev_err(chip->dev, "IBF timeout\n");
+		dev_err(chip->pdev, "IBF timeout\n");
 		return -EIO;
 	}
 
 	outb(NSC_COMMAND_NORMAL, chip->vendor.base + NSC_COMMAND);
 	if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) {
-		dev_err(chip->dev, "IBR timeout\n");
+		dev_err(chip->pdev, "IBR timeout\n");
 		return -EIO;
 	}
 
 	for (i = 0; i < count; i++) {
 		if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
-			dev_err(chip->dev,
+			dev_err(chip->pdev,
 				"IBF timeout (while writing data)\n");
 			return -EIO;
 		}
@@ -209,7 +209,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
 	}
 
 	if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
-		dev_err(chip->dev, "IBF timeout\n");
+		dev_err(chip->pdev, "IBF timeout\n");
 		return -EIO;
 	}
 	outb(NSC_COMMAND_EOC, chip->vendor.base + NSC_COMMAND);
@@ -247,10 +247,9 @@ static struct platform_device *pdev = NULL;
 static void tpm_nsc_remove(struct device *dev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(dev);
-	if ( chip ) {
+
+	tpm_chip_unregister(chip);
 	release_region(chip->vendor.base, 2);
-		tpm_remove_hardware(chip->dev);
-	}
 }
 
 static SIMPLE_DEV_PM_OPS(tpm_nsc_pm, tpm_pm_suspend, tpm_pm_resume);
@@ -307,11 +306,16 @@ static int __init init_nsc(void)
 		goto err_del_dev;
 	}
 
-	if (!(chip = tpm_register_hardware(&pdev->dev, &tpm_nsc))) {
+	chip = tpmm_chip_alloc(&pdev->dev, &tpm_nsc);
+	if (IS_ERR(chip)) {
 		rc = -ENODEV;
 		goto err_rel_reg;
 	}
 
+	rc = tpm_chip_register(chip);
+	if (rc)
+		goto err_rel_reg;
+
 	dev_dbg(&pdev->dev, "NSC TPM detected\n");
 	dev_dbg(&pdev->dev,
 		"NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n",

drivers/char/tpm/tpm_of.c

 /*
  * Copyright 2012 IBM Corporation
  *
- * Author: Ashley Lai <adlai@us.ibm.com>
+ * Author: Ashley Lai <ashleydlai@gmail.com>
  *
  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
  *

drivers/char/tpm/tpm_ppi.c

+/*
+ * Copyright (C) 2012-2014 Intel Corporation
+ *
+ * Authors:
+ * Xiaoyan Zhang <xiaoyan.zhang@intel.com>
+ * Jiang Liu <jiang.liu@linux.intel.com>
+ * Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
+ *
+ * Maintained by: <tpmdd-devel@lists.sourceforge.net>
+ *
+ * This file contains implementation of the sysfs interface for PPI.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+
 #include <linux/acpi.h>
 #include "tpm.h"
 
@@ -12,7 +31,6 @@
 #define PPI_TPM_REQ_MAX		22
 #define PPI_VS_REQ_START	128
 #define PPI_VS_REQ_END		255
-#define PPI_VERSION_LEN		3
 
 static const u8 tpm_ppi_uuid[] = {
 	0xA6, 0xFA, 0xDD, 0x3D,
@@ -22,45 +40,22 @@ static const u8 tpm_ppi_uuid[] = {
 	0x8D, 0x10, 0x08, 0x9D, 0x16, 0x53
 };
 
-static char tpm_ppi_version[PPI_VERSION_LEN + 1];
-static acpi_handle tpm_ppi_handle;
-
-static acpi_status ppi_callback(acpi_handle handle, u32 level, void *context,
-				void **return_value)
-{
-	union acpi_object *obj;
-
-	if (!acpi_check_dsm(handle, tpm_ppi_uuid, TPM_PPI_REVISION_ID,
-			    1 << TPM_PPI_FN_VERSION))
-		return AE_OK;
-
-	/* Cache version string */
-	obj = acpi_evaluate_dsm_typed(handle, tpm_ppi_uuid,
-				      TPM_PPI_REVISION_ID, TPM_PPI_FN_VERSION,
-				      NULL, ACPI_TYPE_STRING);
-	if (obj) {
-		strlcpy(tpm_ppi_version, obj->string.pointer,
-			PPI_VERSION_LEN + 1);
-		ACPI_FREE(obj);
-	}
-
-	*return_value = handle;
-
-	return AE_CTRL_TERMINATE;
-}
-
 static inline union acpi_object *
-tpm_eval_dsm(int func, acpi_object_type type, union acpi_object *argv4)
+tpm_eval_dsm(acpi_handle ppi_handle, int func, acpi_object_type type,
+	     union acpi_object *argv4)
 {
-	BUG_ON(!tpm_ppi_handle);
-	return acpi_evaluate_dsm_typed(tpm_ppi_handle, tpm_ppi_uuid,
-				       TPM_PPI_REVISION_ID, func, argv4, type);
+	BUG_ON(!ppi_handle);
+	return acpi_evaluate_dsm_typed(ppi_handle, tpm_ppi_uuid,
+				       TPM_PPI_REVISION_ID,
+				       func, argv4, type);
 }
 
 static ssize_t tpm_show_ppi_version(struct device *dev,
 				    struct device_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", tpm_ppi_version);
+	struct tpm_chip *chip = dev_get_drvdata(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%s\n", chip->ppi_version);
 }
 
 static ssize_t tpm_show_ppi_request(struct device *dev,
@@ -68,8 +63,10 @@ static ssize_t tpm_show_ppi_request(struct device *dev,
 {
 	ssize_t size = -EINVAL;
 	union acpi_object *obj;
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 
-	obj = tpm_eval_dsm(TPM_PPI_FN_GETREQ, ACPI_TYPE_PACKAGE, NULL);
+	obj = tpm_eval_dsm(chip->acpi_dev_handle, TPM_PPI_FN_GETREQ,
+			   ACPI_TYPE_PACKAGE, NULL);
 	if (!obj)
 		return -ENXIO;
 
@@ -103,14 +100,15 @@ static ssize_t tpm_store_ppi_request(struct device *dev,
 	int func = TPM_PPI_FN_SUBREQ;
 	union acpi_object *obj, tmp;
 	union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp);
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 
 	/*
 	 * the function to submit TPM operation request to pre-os environment
 	 * is updated with function index from SUBREQ to SUBREQ2 since PPI
 	 * version 1.1
 	 */
-	if (acpi_check_dsm(tpm_ppi_handle, tpm_ppi_uuid, TPM_PPI_REVISION_ID,
-			   1 << TPM_PPI_FN_SUBREQ2))
+	if (acpi_check_dsm(chip->acpi_dev_handle, tpm_ppi_uuid,
+			   TPM_PPI_REVISION_ID, 1 << TPM_PPI_FN_SUBREQ2))
 		func = TPM_PPI_FN_SUBREQ2;
 
 	/*
@@ -119,7 +117,7 @@ static ssize_t tpm_store_ppi_request(struct device *dev,
 	 * string/package type. For PPI version 1.0 and 1.1, use buffer type
 	 * for compatibility, and use package type since 1.2 according to spec.
 	 */
-	if (strcmp(tpm_ppi_version, "1.2") < 0) {
+	if (strcmp(chip->ppi_version, "1.2") < 0) {
 		if (sscanf(buf, "%d", &req) != 1)
 			return -EINVAL;
 		argv4.type = ACPI_TYPE_BUFFER;
@@ -131,7 +129,8 @@ static ssize_t tpm_store_ppi_request(struct device *dev,
 			return -EINVAL;
 	}
 
-	obj = tpm_eval_dsm(func, ACPI_TYPE_INTEGER, &argv4);
+	obj = tpm_eval_dsm(chip->acpi_dev_handle, func, ACPI_TYPE_INTEGER,
+			   &argv4);
 	if (!obj) {
 		return -ENXIO;
 	} else {
@@ -157,6 +156,7 @@ static ssize_t tpm_show_ppi_transition_action(struct device *dev,
 		.buffer.length = 0,
 		.buffer.pointer = NULL
 	};
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 
 	static char *info[] = {
 		"None",
@@ -171,9 +171,10 @@ static ssize_t tpm_show_ppi_transition_action(struct device *dev,
 	 * (e.g. Capella with PPI 1.0) need integer/string/buffer type, so for
 	 * compatibility, define params[3].type as buffer, if PPI version < 1.2
 	 */
-	if (strcmp(tpm_ppi_version, "1.2") < 0)
+	if (strcmp(chip->ppi_version, "1.2") < 0)
 		obj = &tmp;
-	obj = tpm_eval_dsm(TPM_PPI_FN_GETACT, ACPI_TYPE_INTEGER, obj);
+	obj = tpm_eval_dsm(chip->acpi_dev_handle, TPM_PPI_FN_GETACT,
+			   ACPI_TYPE_INTEGER, obj);
 	if (!obj) {
 		return -ENXIO;
 	} else {
@@ -196,8 +197,10 @@ static ssize_t tpm_show_ppi_response(struct device *dev,
 	acpi_status status = -EINVAL;
 	union acpi_object *obj, *ret_obj;
 	u64 req, res;
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 
-	obj = tpm_eval_dsm(TPM_PPI_FN_GETRSP, ACPI_TYPE_PACKAGE, NULL);
+	obj = tpm_eval_dsm(chip->acpi_dev_handle, TPM_PPI_FN_GETRSP,
+			   ACPI_TYPE_PACKAGE, NULL);
 	if (!obj)
 		return -ENXIO;
 
@@ -248,7 +251,8 @@ static ssize_t tpm_show_ppi_response(struct device *dev,
 	return status;
 }
 
-static ssize_t show_ppi_operations(char *buf, u32 start, u32 end)
+static ssize_t show_ppi_operations(acpi_handle dev_handle, char *buf, u32 start,
+				   u32 end)
 {
 	int i;
 	u32 ret;
@@ -264,14 +268,15 @@ static ssize_t show_ppi_operations(char *buf, u32 start, u32 end)
 		"User not required",
 	};
 
-	if (!acpi_check_dsm(tpm_ppi_handle, tpm_ppi_uuid, TPM_PPI_REVISION_ID,
+	if (!acpi_check_dsm(dev_handle, tpm_ppi_uuid, TPM_PPI_REVISION_ID,
 			    1 << TPM_PPI_FN_GETOPR))
 		return -EPERM;
 
 	tmp.integer.type = ACPI_TYPE_INTEGER;
 	for (i = start; i <= end; i++) {
 		tmp.integer.value = i;
-		obj = tpm_eval_dsm(TPM_PPI_FN_GETOPR, ACPI_TYPE_INTEGER, &argv);
+		obj = tpm_eval_dsm(dev_handle, TPM_PPI_FN_GETOPR,
+				   ACPI_TYPE_INTEGER, &argv);
 		if (!obj) {
 			return -ENOMEM;
 		} else {
@@ -291,14 +296,20 @@ static ssize_t tpm_show_ppi_tcg_operations(struct device *dev,
 					   struct device_attribute *attr,
 					   char *buf)
 {
-	return show_ppi_operations(buf, 0, PPI_TPM_REQ_MAX);
+	struct tpm_chip *chip = dev_get_drvdata(dev);
+
+	return show_ppi_operations(chip->acpi_dev_handle, buf, 0,
+				   PPI_TPM_REQ_MAX);
 }
 
 static ssize_t tpm_show_ppi_vs_operations(struct device *dev,
 					  struct device_attribute *attr,
 					  char *buf)
 {
-	return show_ppi_operations(buf, PPI_VS_REQ_START, PPI_VS_REQ_END);
+	struct tpm_chip *chip = dev_get_drvdata(dev);
+
+	return show_ppi_operations(chip->acpi_dev_handle, buf, PPI_VS_REQ_START,
+				   PPI_VS_REQ_END);
 }
 
 static DEVICE_ATTR(version, S_IRUGO, tpm_show_ppi_version, NULL);
@@ -323,16 +334,38 @@ static struct attribute_group ppi_attr_grp = {
 	.attrs = ppi_attrs
 };
 
-int tpm_add_ppi(struct kobject *parent)
+int tpm_add_ppi(struct tpm_chip *chip)
 {
-	/* Cache TPM ACPI handle and version string */
-	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
-			    ppi_callback, NULL, NULL, &tpm_ppi_handle);
-	return tpm_ppi_handle ? sysfs_create_group(parent, &ppi_attr_grp) : 0;
+	union acpi_object *obj;
+	int rc;
+
+	if (!chip->acpi_dev_handle)
+		return 0;
+
+	if (!acpi_check_dsm(chip->acpi_dev_handle, tpm_ppi_uuid,
+			    TPM_PPI_REVISION_ID, 1 << TPM_PPI_FN_VERSION))
+		return 0;
+
+	/* Cache PPI version string. */
+	obj = acpi_evaluate_dsm_typed(chip->acpi_dev_handle, tpm_ppi_uuid,
+				      TPM_PPI_REVISION_ID, TPM_PPI_FN_VERSION,
+				      NULL, ACPI_TYPE_STRING);
+	if (obj) {
+		strlcpy(chip->ppi_version, obj->string.pointer,
+			sizeof(chip->ppi_version));
+		ACPI_FREE(obj);
+	}
+
+	rc = sysfs_create_group(&chip->pdev->kobj, &ppi_attr_grp);
+
+	if (!rc)
+		chip->flags |= TPM_CHIP_FLAG_PPI;
+
+	return rc;
 }
 
-void tpm_remove_ppi(struct kobject *parent)
+void tpm_remove_ppi(struct tpm_chip *chip)
 {
-	if (tpm_ppi_handle)
-		sysfs_remove_group(parent, &ppi_attr_grp);
+	if (chip->flags & TPM_CHIP_FLAG_PPI)
+		sysfs_remove_group(&chip->pdev->kobj, &ppi_attr_grp);
 }

drivers/char/tpm/xen-tpmfront.c

@@ -175,9 +175,9 @@ static int setup_chip(struct device *dev, struct tpm_private *priv)
 {
 	struct tpm_chip *chip;
 
-	chip = tpm_register_hardware(dev, &tpm_vtpm);
-	if (!chip)
-		return -ENODEV;
+	chip = tpmm_chip_alloc(dev, &tpm_vtpm);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
 
 	init_waitqueue_head(&chip->vendor.read_queue);
 
@@ -286,6 +286,7 @@ static int tpmfront_probe(struct xenbus_device *dev,
 		const struct xenbus_device_id *id)
 {
 	struct tpm_private *priv;
+	struct tpm_chip *chip;
 	int rv;
 
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
@@ -302,21 +303,22 @@ static int tpmfront_probe(struct xenbus_device *dev,
 
 	rv = setup_ring(dev, priv);
 	if (rv) {
-		tpm_remove_hardware(&dev->dev);
+		chip = dev_get_drvdata(&dev->dev);
+		tpm_chip_unregister(chip);
 		ring_free(priv);
 		return rv;
 	}
 
 	tpm_get_timeouts(priv->chip);
 
-	return rv;
+	return tpm_chip_register(priv->chip);
 }
 
 static int tpmfront_remove(struct xenbus_device *dev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(&dev->dev);
 	struct tpm_private *priv = TPM_VPRIV(chip);
-	tpm_remove_hardware(&dev->dev);
+	tpm_chip_unregister(chip);
 	ring_free(priv);
 	TPM_VPRIV(chip) = NULL;
 	return 0;

drivers/char/tpm/tpm_i2c_stm_st33.h → include/linux/platform_data/tpm_stm_st33.h

@@ -12,9 +12,8 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
  *
  * STMicroelectronics version 1.2.0, Copyright (C) 2010
  * STMicroelectronics comes with ABSOLUTELY NO WARRANTY.
@@ -23,39 +22,18 @@
  *
  * @Author: Christophe RICARD tpmsupport@st.com
  *
- * @File: stm_st33_tpm_i2c.h
+ * @File: stm_st33_tpm.h
  *
  * @Date: 09/15/2010
  */
-#ifndef __STM_ST33_TPM_I2C_MAIN_H__
-#define __STM_ST33_TPM_I2C_MAIN_H__
+#ifndef __STM_ST33_TPM_H__
+#define __STM_ST33_TPM_H__
 
-#define TPM_ACCESS			(0x0)
-#define TPM_STS				(0x18)
-#define TPM_HASH_END			(0x20)
-#define TPM_DATA_FIFO			(0x24)
-#define TPM_HASH_DATA			(0x24)
-#define TPM_HASH_START			(0x28)
-#define TPM_INTF_CAPABILITY		(0x14)
-#define TPM_INT_STATUS			(0x10)
-#define TPM_INT_ENABLE			(0x08)
-
-#define TPM_DUMMY_BYTE			0xAA
-#define TPM_WRITE_DIRECTION		0x80
-#define TPM_HEADER_SIZE			10
-#define TPM_BUFSIZE			2048
-
-#define LOCALITY0		0
-
-#define TPM_ST33_I2C			"st33zp24_i2c"
+#define TPM_ST33_I2C			"st33zp24-i2c"
+#define TPM_ST33_SPI			"st33zp24-spi"
 
 struct st33zp24_platform_data {
-	int io_serirq;
 	int io_lpcpd;
-	struct i2c_client *client;
-	u8 *tpm_i2c_buffer[2]; /* 0 Request 1 Response */
-	struct completion irq_detection;
-	struct mutex lock;
 };
 
-#endif /* __STM_ST33_TPM_I2C_MAIN_H__ */
+#endif /* __STM_ST33_TPM_H__ */

include/net/cipso_ipv4.h

@@ -120,13 +120,6 @@ extern int cipso_v4_rbm_optfmt;
 extern int cipso_v4_rbm_strictvalid;
 #endif
 
-/*
- * Helper Functions
- */
-
-#define CIPSO_V4_OPTEXIST(x) (IPCB(x)->opt.cipso != 0)
-#define CIPSO_V4_OPTPTR(x) (skb_network_header(x) + IPCB(x)->opt.cipso)
-
 /*
  * DOI List Functions
  */
@@ -190,7 +183,7 @@ static inline int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
 
 #ifdef CONFIG_NETLABEL
 void cipso_v4_cache_invalidate(void);
-int cipso_v4_cache_add(const struct sk_buff *skb,
+int cipso_v4_cache_add(const unsigned char *cipso_ptr,
 		       const struct netlbl_lsm_secattr *secattr);
 #else
 static inline void cipso_v4_cache_invalidate(void)
@@ -198,7 +191,7 @@ static inline void cipso_v4_cache_invalidate(void)
 	return;
 }
 
-static inline int cipso_v4_cache_add(const struct sk_buff *skb,
+static inline int cipso_v4_cache_add(const unsigned char *cipso_ptr,
 				     const struct netlbl_lsm_secattr *secattr)
 {
 	return 0;
@@ -211,6 +204,8 @@ static inline int cipso_v4_cache_add(const struct sk_buff *skb,
 
 #ifdef CONFIG_NETLABEL
 void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway);
+int cipso_v4_getattr(const unsigned char *cipso,
+		     struct netlbl_lsm_secattr *secattr);
 int cipso_v4_sock_setattr(struct sock *sk,
 			  const struct cipso_v4_doi *doi_def,
 			  const struct netlbl_lsm_secattr *secattr);
@@ -226,6 +221,7 @@ int cipso_v4_skbuff_setattr(struct sk_buff *skb,
 int cipso_v4_skbuff_delattr(struct sk_buff *skb);
 int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
 			    struct netlbl_lsm_secattr *secattr);
+unsigned char *cipso_v4_optptr(const struct sk_buff *skb);
 int cipso_v4_validate(const struct sk_buff *skb, unsigned char **option);
 #else
 static inline void cipso_v4_error(struct sk_buff *skb,
@@ -235,6 +231,12 @@ static inline void cipso_v4_error(struct sk_buff *skb,
 	return;
 }
 
+static inline int cipso_v4_getattr(const unsigned char *cipso,
+				   struct netlbl_lsm_secattr *secattr)
+{
+	return -ENOSYS;
+}
+
 static inline int cipso_v4_sock_setattr(struct sock *sk,
 				      const struct cipso_v4_doi *doi_def,
 				      const struct netlbl_lsm_secattr *secattr)
@@ -282,6 +284,11 @@ static inline int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
 	return -ENOSYS;
 }
 
+static inline unsigned char *cipso_v4_optptr(const struct sk_buff *skb)
+{
+	return NULL;
+}
+
 static inline int cipso_v4_validate(const struct sk_buff *skb,
 				    unsigned char **option)
 {

kernel/Makefile

@@ -143,7 +143,7 @@ endif
 kernel/system_certificates.o: $(obj)/x509_certificate_list
 
 quiet_cmd_x509certs  = CERTS   $@
-      cmd_x509certs  = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; echo "  - Including cert $(X509)")
+      cmd_x509certs  = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; $(kecho) "  - Including cert $(X509)")
 
 targets += $(obj)/x509_certificate_list
 $(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list

lib/mpi/mpi-cmp.c

@@ -57,14 +57,12 @@ int mpi_cmp(MPI u, MPI v)
 	if (usize != vsize && !u->sign && !v->sign)
 		return usize - vsize;
 	if (usize != vsize && u->sign && v->sign)
-		return vsize + usize;
+		return vsize - usize;
 	if (!usize)
 		return 0;
 	cmp = mpihelp_cmp(u->d, v->d, usize);
-	if (!cmp)
-		return 0;
-	if ((cmp < 0 ? 1 : 0) == (u->sign ? 1 : 0))
-		return 1;
-	return -1;
+	if (u->sign)
+		return -cmp;
+	return cmp;
 }
 EXPORT_SYMBOL_GPL(mpi_cmp);

lib/mpi/mpi-internal.h

@@ -84,7 +84,7 @@ static inline int RESIZE_IF_NEEDED(MPI a, unsigned b)
 	do {					\
 		mpi_size_t _i;			\
 		for (_i = 0; _i < (n); _i++)	\
-			(d)[_i] = (d)[_i];	\
+			(d)[_i] = (s)[_i];	\
 	} while (0)
 
 #define MPN_COPY_DECR(d, s, n) \

net/netlabel/netlabel_kapi.c

@@ -1065,10 +1065,12 @@ int netlbl_skbuff_getattr(const struct sk_buff *skb,
 			  u16 family,
 			  struct netlbl_lsm_secattr *secattr)
 {
+	unsigned char *ptr;
+
 	switch (family) {
 	case AF_INET:
-		if (CIPSO_V4_OPTEXIST(skb) &&
-		    cipso_v4_skbuff_getattr(skb, secattr) == 0)
+		ptr = cipso_v4_optptr(skb);
+		if (ptr && cipso_v4_getattr(ptr, secattr) == 0)
 			return 0;
 		break;
 #if IS_ENABLED(CONFIG_IPV6)
@@ -1094,7 +1096,7 @@ int netlbl_skbuff_getattr(const struct sk_buff *skb,
  */
 void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway)
 {
-	if (CIPSO_V4_OPTEXIST(skb))
+	if (cipso_v4_optptr(skb))
 		cipso_v4_error(skb, error, gateway);
 }
 
@@ -1126,11 +1128,14 @@ void netlbl_cache_invalidate(void)
 int netlbl_cache_add(const struct sk_buff *skb,
 		     const struct netlbl_lsm_secattr *secattr)
 {
+	unsigned char *ptr;
+
 	if ((secattr->flags & NETLBL_SECATTR_CACHE) == 0)
 		return -ENOMSG;
 
-	if (CIPSO_V4_OPTEXIST(skb))
-		return cipso_v4_cache_add(skb, secattr);
+	ptr = cipso_v4_optptr(skb);
+	if (ptr)
+		return cipso_v4_cache_add(ptr, secattr);
 
 	return -ENOMSG;
 }

security/integrity/ima/Kconfig

@@ -126,7 +126,6 @@ config IMA_TRUSTED_KEYRING
 	bool "Require all keys on the .ima keyring be signed"
 	depends on IMA_APPRAISE && SYSTEM_TRUSTED_KEYRING
 	depends on INTEGRITY_ASYMMETRIC_KEYS
-	select KEYS_DEBUG_PROC_KEYS
 	default y
 	help
 	   This option requires that all keys added to the .ima

security/selinux/avc.c

@@ -517,11 +517,6 @@ int __init avc_add_callback(int (*callback)(u32 event), u32 events)
 	return rc;
 }
 
-static inline int avc_sidcmp(u32 x, u32 y)
-{
-	return (x == y || x == SECSID_WILD || y == SECSID_WILD);
-}
-
 /**
  * avc_update_node Update an AVC entry
  * @event : Updating event