Merge bk://kernel.bkbits.net/davem/sparc-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Documentation/aoe/aoe.txt

@@ -6,9 +6,16 @@ The EtherDrive (R) HOWTO for users of 2.6 kernels is found at ...
 
 CREATING DEVICE NODES
 
-  Users of udev should find device nodes created automatically.  Two
-  scripts are provided in Documentation/aoe as examples of static
-  device node creation for using the aoe driver.
+  Users of udev should find the block device nodes created
+  automatically, but to create all the necessary device nodes, use the
+  udev configuration rules provided in udev.txt (in this directory).
+
+  There is a udev-install.sh script that shows how to install these
+  rules on your system.
+
+  If you are not using udev, two scripts are provided in
+  Documentation/aoe as examples of static device node creation for
+  using the aoe driver.
 
     rm -rf /dev/etherd
     sh Documentation/aoe/mkdevs.sh /dev/etherd

Documentation/aoe/status.sh

@@ -4,10 +4,13 @@
 set -e
 format="%8s\t%8s\t%8s\n"
 me=`basename $0`
+sysd=${sysfs_dir:-/sys}
 
 # printf "$format" device mac netif state
 
-test -z "`mount | grep sysfs`" && {
+# Suse 9.1 Pro doesn't put /sys in /etc/mtab
+#test -z "`mount | grep sysfs`" && {
+test ! -d "$sysd/block" && {
 	echo "$me Error: sysfs is not mounted" 1>&2
 	exit 1
 }
@@ -16,7 +19,7 @@ test -z "`lsmod | grep '^aoe'`" && {
 	exit 1
 }
 
-for d in `ls -d /sys/block/etherd* 2>/dev/null | grep -v p` end; do
+for d in `ls -d $sysd/block/etherd* 2>/dev/null | grep -v p` end; do
 	# maybe ls comes up empty, so we use "end"
 	test $d = end && continue
 

Documentation/aoe/udev-install.sh

+# install the aoe-specific udev rules from udev.txt into 
+# the system's udev configuration
+# 
+
+me="`basename $0`"
+
+# find udev.conf, often /etc/udev/udev.conf
+# (or environment can specify where to find udev.conf)
+#
+if test -z "$conf"; then
+	if test -r /etc/udev/udev.conf; then
+		conf=/etc/udev/udev.conf
+	else
+		conf="`find /etc -type f -name udev.conf 2> /dev/null`"
+		if test -z "$conf" || test ! -r "$conf"; then
+			echo "$me Error: no udev.conf found" 1>&2
+			exit 1
+		fi
+	fi
+fi
+
+# find the directory where udev rules are stored, often
+# /etc/udev/rules.d
+#
+rules_d="`sed -n '/^udev_rules=/{ s!udev_rules=!!; s!\"!!g; p; }' $conf`"
+test "$rules_d" && sh -xc "cp `dirname $0`/udev.txt $rules_d/60-aoe.rules"

Documentation/aoe/udev.txt

+# These rules tell udev what device nodes to create for aoe support.
+# They may be installed along the following lines (adjusted to what
+# you see on your system).
+# 
+#   ecashin@makki ~$ su
+#   Password:
+#   bash# find /etc -type f -name udev.conf
+#   /etc/udev/udev.conf
+#   bash# grep udev_rules= /etc/udev/udev.conf
+#   udev_rules="/etc/udev/rules.d/"
+#   bash# ls /etc/udev/rules.d/
+#   10-wacom.rules  50-udev.rules
+#   bash# cp /path/to/linux-2.6.xx/Documentation/aoe/udev.txt \
+#           /etc/udev/rules.d/60-aoe.rules
+#  
+
+# aoe char devices
+SUBSYSTEM="aoe", KERNEL="discover",	NAME="etherd/%k", GROUP="disk", MODE="0220"
+SUBSYSTEM="aoe", KERNEL="err",		NAME="etherd/%k", GROUP="disk", MODE="0440"
+SUBSYSTEM="aoe", KERNEL="interfaces",	NAME="etherd/%k", GROUP="disk", MODE="0220"
+
+# aoe block devices     
+KERNEL="etherd*",       NAME="%k", GROUP="disk"

Documentation/feature-removal-schedule.txt

@@ -15,3 +15,20 @@ Why:	It has been unmaintained for a number of years, has unfixable
 	against the LSB, and can be replaced by using udev.
 Who:	Greg Kroah-Hartman <greg@kroah.com>
 
+---------------------------
+
+What:	/proc/sys/cpu/*, sysctl and /proc/cpufreq interfaces to cpufreq (2.4.x interfaces)
+When:	January 2005
+Files:	drivers/cpufreq/: cpufreq_userspace.c, proc_intf.c
+Why:	/proc/sys/cpu/* has been deprecated since inclusion of cpufreq into
+	the main kernel tree. It bloats /proc/ unnecessarily and doesn't work
+	well with the "governor"-based design of cpufreq.
+	/proc/cpufreq/* has also been deprecated for a long time and was only
+	meant for usage during 2.5. until the new sysfs-based interface became
+	ready. It has an inconsistent interface which doesn't work well with
+	userspace setting the frequency. The output from /proc/cpufreq/* can
+	be emulated using "cpufreq-info --proc" (cpufrequtils).
+	Both interfaces are superseded by the cpufreq interface in
+	/sys/devices/system/cpu/cpu%n/cpufreq/.
+Who:	Dominik Brodowski <linux@brodo.de>
+

drivers/base/bus.c

@@ -65,7 +65,7 @@ static struct sysfs_ops driver_sysfs_ops = {
 static void driver_release(struct kobject * kobj)
 {
 	struct device_driver * drv = to_driver(kobj);
-	up(&drv->unload_sem);
+	complete(&drv->unloaded);
 }
 
 static struct kobj_type ktype_driver = {
@@ -465,6 +465,7 @@ int bus_add_device(struct device * dev)
 		up_write(&dev->bus->subsys.rwsem);
 		device_add_attrs(bus, dev);
 		sysfs_create_link(&bus->devices.kobj, &dev->kobj, dev->bus_id);
+		sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "bus");
 	}
 	return error;
 }
@@ -481,6 +482,7 @@ int bus_add_device(struct device * dev)
 void bus_remove_device(struct device * dev)
 {
 	if (dev->bus) {
+		sysfs_remove_link(&dev->kobj, "bus");
 		sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id);
 		device_remove_attrs(dev->bus, dev);
 		down_write(&dev->bus->subsys.rwsem);

drivers/base/class.c

@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/string.h>
+#include <linux/kdev_t.h>
 #include "base.h"
 
 #define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr)
@@ -139,6 +140,7 @@ int class_register(struct class * cls)
 
 	INIT_LIST_HEAD(&cls->children);
 	INIT_LIST_HEAD(&cls->interfaces);
+	init_MUTEX(&cls->sem);
 	error = kobject_set_name(&cls->subsys.kset.kobj, "%s", cls->name);
 	if (error)
 		return error;
@@ -195,33 +197,6 @@ void class_device_remove_bin_file(struct class_device *class_dev,
 		sysfs_remove_bin_file(&class_dev->kobj, attr);
 }
 
-static int class_device_dev_link(struct class_device * class_dev)
-{
-	if (class_dev->dev)
-		return sysfs_create_link(&class_dev->kobj,
-					 &class_dev->dev->kobj, "device");
-	return 0;
-}
-
-static void class_device_dev_unlink(struct class_device * class_dev)
-{
-	sysfs_remove_link(&class_dev->kobj, "device");
-}
-
-static int class_device_driver_link(struct class_device * class_dev)
-{
-	if ((class_dev->dev) && (class_dev->dev->driver))
-		return sysfs_create_link(&class_dev->kobj,
-					 &class_dev->dev->driver->kobj, "driver");
-	return 0;
-}
-
-static void class_device_driver_unlink(struct class_device * class_dev)
-{
-	sysfs_remove_link(&class_dev->kobj, "driver");
-}
-
-
 static ssize_t
 class_device_attr_show(struct kobject * kobj, struct attribute * attr,
 		       char * buf)
@@ -298,9 +273,9 @@ static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
 	struct class_device *class_dev = to_class_dev(kobj);
-	int retval = 0;
 	int i = 0;
 	int length = 0;
+	int retval = 0;
 
 	pr_debug("%s - name = %s\n", __FUNCTION__, class_dev->class_id);
 
@@ -313,26 +288,34 @@ static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
 				    &length, "PHYSDEVPATH=%s", path);
 		kfree(path);
 
-		/* add bus name of physical device */
 		if (dev->bus)
 			add_hotplug_env_var(envp, num_envp, &i,
 					    buffer, buffer_size, &length,
 					    "PHYSDEVBUS=%s", dev->bus->name);
 
-		/* add driver name of physical device */
 		if (dev->driver)
 			add_hotplug_env_var(envp, num_envp, &i,
 					    buffer, buffer_size, &length,
 					    "PHYSDEVDRIVER=%s", dev->driver->name);
+	}
+
+	if (MAJOR(class_dev->devt)) {
+		add_hotplug_env_var(envp, num_envp, &i,
+				    buffer, buffer_size, &length,
+				    "MAJOR=%u", MAJOR(class_dev->devt));
 
-		/* terminate, set to next free slot, shrink available space */
-		envp[i] = NULL;
-		envp = &envp[i];
-		num_envp -= i;
-		buffer = &buffer[length];
-		buffer_size -= length;
+		add_hotplug_env_var(envp, num_envp, &i,
+				    buffer, buffer_size, &length,
+				    "MINOR=%u", MINOR(class_dev->devt));
 	}
 
+	/* terminate, set to next free slot, shrink available space */
+	envp[i] = NULL;
+	envp = &envp[i];
+	num_envp -= i;
+	buffer = &buffer[length];
+	buffer_size -= length;
+
 	if (class_dev->class->hotplug) {
 		/* have the bus specific function add its stuff */
 		retval = class_dev->class->hotplug (class_dev, envp, num_envp,
@@ -388,6 +371,12 @@ static void class_device_remove_attrs(struct class_device * cd)
 	}
 }
 
+static ssize_t show_dev(struct class_device *class_dev, char *buf)
+{
+	return print_dev_t(buf, class_dev->devt);
+}
+static CLASS_DEVICE_ATTR(dev, S_IRUGO, show_dev, NULL);
+
 void class_device_initialize(struct class_device *class_dev)
 {
 	kobj_set_kset_s(class_dev, class_obj_subsys);
@@ -425,16 +414,21 @@ int class_device_add(struct class_device *class_dev)
 
 	/* now take care of our own registration */
 	if (parent) {
-		down_write(&parent->subsys.rwsem);
+		down(&parent->sem);
 		list_add_tail(&class_dev->node, &parent->children);
 		list_for_each_entry(class_intf, &parent->interfaces, node)
 			if (class_intf->add)
 				class_intf->add(class_dev);
-		up_write(&parent->subsys.rwsem);
+		up(&parent->sem);
 	}
+
+	if (MAJOR(class_dev->devt))
+		class_device_create_file(class_dev, &class_device_attr_dev);
+
 	class_device_add_attrs(class_dev);
-	class_device_dev_link(class_dev);
-	class_device_driver_link(class_dev);
+	if (class_dev->dev)
+		sysfs_create_link(&class_dev->kobj,
+				  &class_dev->dev->kobj, "device");
 
  register_done:
 	if (error && parent)
@@ -455,16 +449,16 @@ void class_device_del(struct class_device *class_dev)
 	struct class_interface * class_intf;
 
 	if (parent) {
-		down_write(&parent->subsys.rwsem);
+		down(&parent->sem);
 		list_del_init(&class_dev->node);
 		list_for_each_entry(class_intf, &parent->interfaces, node)
 			if (class_intf->remove)
 				class_intf->remove(class_dev);
-		up_write(&parent->subsys.rwsem);
+		up(&parent->sem);
 	}
 
-	class_device_dev_unlink(class_dev);
-	class_device_driver_unlink(class_dev);
+	if (class_dev->dev)
+		sysfs_remove_link(&class_dev->kobj, "device");
 	class_device_remove_attrs(class_dev);
 
 	kobject_del(&class_dev->kobj);
@@ -516,8 +510,8 @@ void class_device_put(struct class_device *class_dev)
 
 int class_interface_register(struct class_interface *class_intf)
 {
-	struct class * parent;
-	struct class_device * class_dev;
+	struct class *parent;
+	struct class_device *class_dev;
 
 	if (!class_intf || !class_intf->class)
 		return -ENODEV;
@@ -526,14 +520,13 @@ int class_interface_register(struct class_interface *class_intf)
 	if (!parent)
 		return -EINVAL;
 
-	down_write(&parent->subsys.rwsem);
+	down(&parent->sem);
 	list_add_tail(&class_intf->node, &parent->interfaces);
-
 	if (class_intf->add) {
 		list_for_each_entry(class_dev, &parent->children, node)
 			class_intf->add(class_dev);
 	}
-	up_write(&parent->subsys.rwsem);
+	up(&parent->sem);
 
 	return 0;
 }
@@ -546,14 +539,13 @@ void class_interface_unregister(struct class_interface *class_intf)
 	if (!parent)
 		return;
 
-	down_write(&parent->subsys.rwsem);
+	down(&parent->sem);
 	list_del_init(&class_intf->node);
-
 	if (class_intf->remove) {
 		list_for_each_entry(class_dev, &parent->children, node)
 			class_intf->remove(class_dev);
 	}
-	up_write(&parent->subsys.rwsem);
+	up(&parent->sem);
 
 	class_put(parent);
 }

drivers/base/class_simple.c

@@ -10,18 +10,15 @@
 
 #include <linux/config.h>
 #include <linux/device.h>
-#include <linux/kdev_t.h>
 #include <linux/err.h>
 
 struct class_simple {
-	struct class_device_attribute attr;
 	struct class class;
 };
 #define to_class_simple(d) container_of(d, struct class_simple, class)
 
 struct simple_dev {
 	struct list_head node;
-	dev_t dev;
 	struct class_device class_dev;
 };
 #define to_simple_dev(d) container_of(d, struct simple_dev, class_dev)
@@ -35,12 +32,6 @@ static void release_simple_dev(struct class_device *class_dev)
 	kfree(s_dev);
 }
 
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
-{
-	struct simple_dev *s_dev = to_simple_dev(class_dev);
-	return print_dev_t(buf, s_dev->dev);
-}
-
 static void class_simple_release(struct class *class)
 {
 	struct class_simple *cs = to_class_simple(class);
@@ -75,12 +66,6 @@ struct class_simple *class_simple_create(struct module *owner, char *name)
 	cs->class.class_release = class_simple_release;
 	cs->class.release = release_simple_dev;
 
-	cs->attr.attr.name = "dev";
-	cs->attr.attr.mode = S_IRUGO;
-	cs->attr.attr.owner = owner;
-	cs->attr.show = show_dev;
-	cs->attr.store = NULL;
-
 	retval = class_register(&cs->class);
 	if (retval)
 		goto error;
@@ -143,7 +128,7 @@ struct class_device *class_simple_device_add(struct class_simple *cs, dev_t dev,
 	}
 	memset(s_dev, 0x00, sizeof(*s_dev));
 
-	s_dev->dev = dev;
+	s_dev->class_dev.devt = dev;
 	s_dev->class_dev.dev = device;
 	s_dev->class_dev.class = &cs->class;
 
@@ -154,8 +139,6 @@ struct class_device *class_simple_device_add(struct class_simple *cs, dev_t dev,
 	if (retval)
 		goto error;
 
-	class_device_create_file(&s_dev->class_dev, &cs->attr);
-
 	spin_lock(&simple_dev_list_lock);
 	list_add(&s_dev->node, &simple_dev_list);
 	spin_unlock(&simple_dev_list_lock);
@@ -200,7 +183,7 @@ void class_simple_device_remove(dev_t dev)
 
 	spin_lock(&simple_dev_list_lock);
 	list_for_each_entry(s_dev, &simple_dev_list, node) {
-		if (s_dev->dev == dev) {
+		if (s_dev->class_dev.devt == dev) {
 			found = 1;
 			break;
 		}

drivers/base/driver.c

@@ -79,14 +79,14 @@ void put_driver(struct device_driver * drv)
  *	since most of the things we have to do deal with the bus
  *	structures.
  *
- *	The one interesting aspect is that we initialize @drv->unload_sem
- *	to a locked state here. It will be unlocked when the driver
- *	reference count reaches 0.
+ *	The one interesting aspect is that we setup @drv->unloaded
+ *	as a completion that gets complete when the driver reference
+ *	count reaches 0.
  */
 int driver_register(struct device_driver * drv)
 {
 	INIT_LIST_HEAD(&drv->devices);
-	init_MUTEX_LOCKED(&drv->unload_sem);
+	init_completion(&drv->unloaded);
 	return bus_add_driver(drv);
 }
 
@@ -97,7 +97,7 @@ int driver_register(struct device_driver * drv)
  *
  *	Again, we pass off most of the work to the bus-level call.
  *
- *	Though, once that is done, we attempt to take @drv->unload_sem.
+ *	Though, once that is done, we wait until @drv->unloaded is completed.
  *	This will block until the driver refcount reaches 0, and it is
  *	released. Only modular drivers will call this function, and we
  *	have to guarantee that it won't complete, letting the driver
@@ -107,8 +107,7 @@ int driver_register(struct device_driver * drv)
 void driver_unregister(struct device_driver * drv)
 {
 	bus_remove_driver(drv);
-	down(&drv->unload_sem);
-	up(&drv->unload_sem);
+	wait_for_completion(&drv->unloaded);
 }
 
 /**

drivers/base/map.c

@@ -25,7 +25,7 @@ struct kobj_map {
 		int (*lock)(dev_t, void *);
 		void *data;
 	} *probes[255];
-	struct rw_semaphore *sem;
+	struct semaphore *sem;
 };
 
 int kobj_map(struct kobj_map *domain, dev_t dev, unsigned long range,
@@ -53,7 +53,7 @@ int kobj_map(struct kobj_map *domain, dev_t dev, unsigned long range,
 		p->range = range;
 		p->data = data;
 	}
-	down_write(domain->sem);
+	down(domain->sem);
 	for (i = 0, p -= n; i < n; i++, p++, index++) {
 		struct probe **s = &domain->probes[index % 255];
 		while (*s && (*s)->range < range)
@@ -61,7 +61,7 @@ int kobj_map(struct kobj_map *domain, dev_t dev, unsigned long range,
 		p->next = *s;
 		*s = p;
 	}
-	up_write(domain->sem);
+	up(domain->sem);
 	return 0;
 }
 
@@ -75,7 +75,7 @@ void kobj_unmap(struct kobj_map *domain, dev_t dev, unsigned long range)
 	if (n > 255)
 		n = 255;
 
-	down_write(domain->sem);
+	down(domain->sem);
 	for (i = 0; i < n; i++, index++) {
 		struct probe **s;
 		for (s = &domain->probes[index % 255]; *s; s = &(*s)->next) {
@@ -88,7 +88,7 @@ void kobj_unmap(struct kobj_map *domain, dev_t dev, unsigned long range)
 			}
 		}
 	}
-	up_write(domain->sem);
+	up(domain->sem);
 	kfree(found);
 }
 
@@ -99,7 +99,7 @@ struct kobject *kobj_lookup(struct kobj_map *domain, dev_t dev, int *index)
 	unsigned long best = ~0UL;
 
 retry:
-	down_read(domain->sem);
+	down(domain->sem);
 	for (p = domain->probes[MAJOR(dev) % 255]; p; p = p->next) {
 		struct kobject *(*probe)(dev_t, int *, void *);
 		struct module *owner;
@@ -120,7 +120,7 @@ struct kobject *kobj_lookup(struct kobj_map *domain, dev_t dev, int *index)
 			module_put(owner);
 			continue;
 		}
-		up_read(domain->sem);
+		up(domain->sem);
 		kobj = probe(dev, index, data);
 		/* Currently ->owner protects _only_ ->probe() itself. */
 		module_put(owner);
@@ -128,12 +128,11 @@ struct kobject *kobj_lookup(struct kobj_map *domain, dev_t dev, int *index)
 			return kobj;
 		goto retry;
 	}
-	up_read(domain->sem);
+	up(domain->sem);
 	return NULL;
 }
 
-struct kobj_map *kobj_map_init(kobj_probe_t *base_probe,
-		struct subsystem *s)
+struct kobj_map *kobj_map_init(kobj_probe_t *base_probe, struct semaphore *sem)
 {
 	struct kobj_map *p = kmalloc(sizeof(struct kobj_map), GFP_KERNEL);
 	struct probe *base = kmalloc(sizeof(struct probe), GFP_KERNEL);
@@ -151,6 +150,6 @@ struct kobj_map *kobj_map_init(kobj_probe_t *base_probe,
 	base->get = base_probe;
 	for (i = 0; i < 255; i++)
 		p->probes[i] = base;
-	p->sem = &s->rwsem;
+	p->sem = sem;
 	return p;
 }

drivers/base/platform.c

@@ -131,7 +131,7 @@ int platform_device_register(struct platform_device * pdev)
 	pdev->dev.bus = &platform_bus_type;
 
 	if (pdev->id != -1)
-		snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s%u", pdev->name, pdev->id);
+		snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%u", pdev->name, pdev->id);
 	else
 		strlcpy(pdev->dev.bus_id, pdev->name, BUS_ID_SIZE);
 

drivers/base/sys.c

@@ -79,7 +79,7 @@ EXPORT_SYMBOL_GPL(sysdev_remove_file);
 /*
  * declare system_subsys
  */
-decl_subsys(system, &ktype_sysdev, NULL);
+static decl_subsys(system, &ktype_sysdev, NULL);
 
 int sysdev_class_register(struct sysdev_class * cls)
 {
@@ -102,7 +102,8 @@ EXPORT_SYMBOL_GPL(sysdev_class_register);
 EXPORT_SYMBOL_GPL(sysdev_class_unregister);
 
 
-static LIST_HEAD(global_drivers);
+static LIST_HEAD(sysdev_drivers);
+static DECLARE_MUTEX(sysdev_drivers_lock);
 
 /**
  *	sysdev_driver_register - Register auxillary driver
@@ -112,14 +113,14 @@ static LIST_HEAD(global_drivers);
  *	If @cls is valid, then @drv is inserted into @cls->drivers to be
  *	called on each operation on devices of that class. The refcount
  *	of @cls is incremented.
- *	Otherwise, @drv is inserted into global_drivers, and called for
+ *	Otherwise, @drv is inserted into sysdev_drivers, and called for
  *	each device.
  */
 
 int sysdev_driver_register(struct sysdev_class * cls,
 			   struct sysdev_driver * drv)
 {
-	down_write(&system_subsys.rwsem);
+	down(&sysdev_drivers_lock);
 	if (cls && kset_get(&cls->kset)) {
 		list_add_tail(&drv->entry, &cls->drivers);
 
@@ -130,8 +131,8 @@ int sysdev_driver_register(struct sysdev_class * cls,
 				drv->add(dev);
 		}
 	} else
-		list_add_tail(&drv->entry, &global_drivers);
-	up_write(&system_subsys.rwsem);
+		list_add_tail(&drv->entry, &sysdev_drivers);
+	up(&sysdev_drivers_lock);
 	return 0;
 }
 
@@ -144,7 +145,7 @@ int sysdev_driver_register(struct sysdev_class * cls,
 void sysdev_driver_unregister(struct sysdev_class * cls,
 			      struct sysdev_driver * drv)
 {
-	down_write(&system_subsys.rwsem);
+	down(&sysdev_drivers_lock);
 	list_del_init(&drv->entry);
 	if (cls) {
 		if (drv->remove) {
@@ -154,7 +155,7 @@ void sysdev_driver_unregister(struct sysdev_class * cls,
 		}
 		kset_put(&cls->kset);
 	}
-	up_write(&system_subsys.rwsem);
+	up(&sysdev_drivers_lock);
 }
 
 EXPORT_SYMBOL_GPL(sysdev_driver_register);
@@ -193,13 +194,13 @@ int sysdev_register(struct sys_device * sysdev)
 	if (!error) {
 		struct sysdev_driver * drv;
 
-		down_write(&system_subsys.rwsem);
+		down(&sysdev_drivers_lock);
 		/* Generic notification is implicit, because it's that
 		 * code that should have called us.
 		 */
 
 		/* Notify global drivers */
-		list_for_each_entry(drv, &global_drivers, entry) {
+		list_for_each_entry(drv, &sysdev_drivers, entry) {
 			if (drv->add)
 				drv->add(sysdev);
 		}
@@ -209,7 +210,7 @@ int sysdev_register(struct sys_device * sysdev)
 			if (drv->add)
 				drv->add(sysdev);
 		}
-		up_write(&system_subsys.rwsem);
+		up(&sysdev_drivers_lock);
 	}
 	return error;
 }
@@ -218,8 +219,8 @@ void sysdev_unregister(struct sys_device * sysdev)
 {
 	struct sysdev_driver * drv;
 
-	down_write(&system_subsys.rwsem);
-	list_for_each_entry(drv, &global_drivers, entry) {
+	down(&sysdev_drivers_lock);
+	list_for_each_entry(drv, &sysdev_drivers, entry) {
 		if (drv->remove)
 			drv->remove(sysdev);
 	}
@@ -228,7 +229,7 @@ void sysdev_unregister(struct sys_device * sysdev)
 		if (drv->remove)
 			drv->remove(sysdev);
 	}
-	up_write(&system_subsys.rwsem);
+	up(&sysdev_drivers_lock);
 
 	kobject_unregister(&sysdev->kobj);
 }
@@ -255,7 +256,7 @@ void sysdev_shutdown(void)
 
 	pr_debug("Shutting Down System Devices\n");
 
-	down_write(&system_subsys.rwsem);
+	down(&sysdev_drivers_lock);
 	list_for_each_entry_reverse(cls, &system_subsys.kset.list,
 				    kset.kobj.entry) {
 		struct sys_device * sysdev;
@@ -268,7 +269,7 @@ void sysdev_shutdown(void)
 			pr_debug(" %s\n", kobject_name(&sysdev->kobj));
 
 			/* Call global drivers first. */
-			list_for_each_entry(drv, &global_drivers, entry) {
+			list_for_each_entry(drv, &sysdev_drivers, entry) {
 				if (drv->shutdown)
 					drv->shutdown(sysdev);
 			}
@@ -284,7 +285,7 @@ void sysdev_shutdown(void)
 				cls->shutdown(sysdev);
 		}
 	}
-	up_write(&system_subsys.rwsem);
+	up(&sysdev_drivers_lock);
 }
 
 
@@ -319,7 +320,7 @@ int sysdev_suspend(u32 state)
 			pr_debug(" %s\n", kobject_name(&sysdev->kobj));
 
 			/* Call global drivers first. */
-			list_for_each_entry(drv, &global_drivers, entry) {
+			list_for_each_entry(drv, &sysdev_drivers, entry) {
 				if (drv->suspend)
 					drv->suspend(sysdev, state);
 			}
@@ -375,7 +376,7 @@ int sysdev_resume(void)
 			}
 
 			/* Call global drivers. */
-			list_for_each_entry(drv, &global_drivers, entry) {
+			list_for_each_entry(drv, &sysdev_drivers, entry) {
 				if (drv->resume)
 					drv->resume(sysdev);
 			}

drivers/block/aoe/aoe.h

@@ -143,7 +143,6 @@ void aoedisk_rm_sysfs(struct aoedev *d);
 int aoechr_init(void);
 void aoechr_exit(void);
 void aoechr_error(char *);
-void aoechr_hdump(char *, int len);
 
 void aoecmd_work(struct aoedev *d);
 void aoecmd_cfg(ushort, unsigned char);

drivers/block/aoe/aoechr.c

@@ -99,41 +99,6 @@ bail:		spin_unlock_irqrestore(&emsgs_lock, flags);
 		up(&emsgs_sema);
 }
 
-#define PERLINE 16
-void
-aoechr_hdump(char *buf, int n)
-{
-	int bufsiz;
-	char *fbuf;
-	int linelen;
-	char *p, *e, *fp;
-
-	bufsiz = n * 3;			/* 2 hex digits and a space */
-	bufsiz += n / PERLINE + 1;	/* the newline characters */
-	bufsiz += 1;			/* the final '\0' */
-
-	fbuf = kmalloc(bufsiz, GFP_ATOMIC);
-	if (!fbuf) {
-		printk(KERN_INFO
-		       "%s: cannot allocate memory\n",
-		       __FUNCTION__);
-		return;
-	}
-	
-	for (p = buf; n <= 0;) {
-		linelen = n > PERLINE ? PERLINE : n;
-		n -= linelen;
-
-		fp = fbuf;
-		for (e=p+linelen; p<e; p++)
-			fp += sprintf(fp, "%2.2X ", *p & 255);
-		sprintf(fp, "\n");
-		aoechr_error(fbuf);
-	}
-
-	kfree(fbuf);
-}
-
 static ssize_t
 aoechr_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offp)
 {
@@ -178,13 +143,13 @@ aoechr_rel(struct inode *inode, struct file *filp)
 static ssize_t
 aoechr_read(struct file *filp, char __user *buf, size_t cnt, loff_t *off)
 {
-	int n;
+	unsigned long n;
 	char *mp;
 	struct ErrMsg *em;
 	ssize_t len;
 	ulong flags;
 
-	n = (int) filp->private_data;
+	n = (unsigned long) filp->private_data;
 	switch (n) {
 	case MINOR_ERR:
 		spin_lock_irqsave(&emsgs_lock, flags);
@@ -233,7 +198,7 @@ aoechr_read(struct file *filp, char __user *buf, size_t cnt, loff_t *off)
 	}
 }
 
-struct file_operations aoe_fops = {
+static struct file_operations aoe_fops = {
 	.write = aoechr_write,
 	.read = aoechr_read,
 	.open = aoechr_open,

drivers/block/aoe/aoecmd.c

@@ -416,7 +416,9 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 
 	if (ahin->cmdstat & 0xa9) {	/* these bits cleared on success */
 		printk(KERN_CRIT "aoe: aoecmd_ata_rsp: ata error cmd=%2.2Xh "
-			"stat=%2.2Xh\n", ahout->cmdstat, ahin->cmdstat);
+			"stat=%2.2Xh from e%ld.%ld\n", 
+			ahout->cmdstat, ahin->cmdstat,
+			d->aoemajor, d->aoeminor);
 		if (buf)
 			buf->flags |= BUFFL_FAIL;
 	} else {
@@ -458,8 +460,8 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 	if (buf) {
 		buf->nframesout -= 1;
 		if (buf->nframesout == 0 && buf->resid == 0) {
-			n = !(buf->flags & BUFFL_FAIL);
-			bio_endio(buf->bio, buf->bio->bi_size, 0);
+			n = (buf->flags & BUFFL_FAIL) ? -EIO : 0;
+			bio_endio(buf->bio, buf->bio->bi_size, n);
 			mempool_free(buf, d->bufpool);
 		}
 	}

drivers/block/floppy.c

@@ -4370,6 +4370,10 @@ int __init floppy_init(void)
 		goto out_flush_work;
 	}
 
+	err = platform_device_register(&floppy_device);
+	if (err)
+		goto out_flush_work;
+
 	for (drive = 0; drive < N_DRIVE; drive++) {
 		if (!(allowed_drive_mask & (1 << drive)))
 			continue;
@@ -4379,23 +4383,12 @@ int __init floppy_init(void)
 		disks[drive]->private_data = (void *)(long)drive;
 		disks[drive]->queue = floppy_queue;
 		disks[drive]->flags |= GENHD_FL_REMOVABLE;
+		disks[drive]->driverfs_dev = &floppy_device.dev;
 		add_disk(disks[drive]);
 	}
 
-	err = platform_device_register(&floppy_device);
-	if (err)
-		goto out_del_disk;
-
 	return 0;
 
-out_del_disk:
-	for (drive = 0; drive < N_DRIVE; drive++) {
-		if (!(allowed_drive_mask & (1 << drive)))
-			continue;
-		if (fdc_state[FDC(drive)].version == FDC_NONE)
-			continue;
-		del_gendisk(disks[drive]);
-	}
 out_flush_work:
 	flush_scheduled_work();
 	if (usage_count)
@@ -4600,7 +4593,6 @@ void cleanup_module(void)
 	int drive;
 
 	init_completion(&device_release);
-	platform_device_unregister(&floppy_device);
 	blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
 	unregister_blkdev(FLOPPY_MAJOR, "fd");
 
@@ -4614,6 +4606,7 @@ void cleanup_module(void)
 		}
 		put_disk(disks[drive]);
 	}
+	platform_device_unregister(&floppy_device);
 	devfs_remove("floppy");
 
 	del_timer_sync(&fd_timeout);

drivers/block/genhd.c

@@ -302,7 +302,7 @@ static struct kobject *base_probe(dev_t dev, int *part, void *data)
 
 static int __init genhd_device_init(void)
 {
-	bdev_map = kobj_map_init(base_probe, &block_subsys);
+	bdev_map = kobj_map_init(base_probe, &block_subsys_sem);
 	blk_dev_init();
 	subsystem_register(&block_subsys);
 	return 0;
@@ -430,43 +430,58 @@ static int block_hotplug_filter(struct kset *kset, struct kobject *kobj)
 static int block_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
-	struct device *dev = NULL;
 	struct kobj_type *ktype = get_ktype(kobj);
+	struct device *physdev;
+	struct gendisk *disk;
+	struct hd_struct *part;
 	int length = 0;
 	int i = 0;
 
-	/* get physical device backing disk or partition */
 	if (ktype == &ktype_block) {
-		struct gendisk *disk = container_of(kobj, struct gendisk, kobj);
-		dev = disk->driverfs_dev;
+		disk = container_of(kobj, struct gendisk, kobj);
+		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
+				    &length, "MINOR=%u", disk->first_minor);
 	} else if (ktype == &ktype_part) {
-		struct gendisk *disk = container_of(kobj->parent, struct gendisk, kobj);
-		dev = disk->driverfs_dev;
-	}
+		disk = container_of(kobj->parent, struct gendisk, kobj);
+		part = container_of(kobj, struct hd_struct, kobj);
+		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
+				    &length, "MINOR=%u",
+				    disk->first_minor + part->partno);
+	} else
+		return 0;
 
-	if (dev) {
-		/* add physical device, backing this device  */
-		char *path = kobject_get_path(&dev->kobj, GFP_KERNEL);
+	add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &length,
+			    "MAJOR=%u", disk->major);
+
+	/* add physical device, backing this device  */
+	physdev = disk->driverfs_dev;
+	if (physdev) {
+		char *path = kobject_get_path(&physdev->kobj, GFP_KERNEL);
 
 		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
 				    &length, "PHYSDEVPATH=%s", path);
 		kfree(path);
 
-		/* add bus name of physical device */
-		if (dev->bus)
+		if (physdev->bus)
 			add_hotplug_env_var(envp, num_envp, &i,
 					    buffer, buffer_size, &length,
-					    "PHYSDEVBUS=%s", dev->bus->name);
+					    "PHYSDEVBUS=%s",
+					    physdev->bus->name);
 
-		/* add driver name of physical device */
-		if (dev->driver)
+		if (physdev->driver)
 			add_hotplug_env_var(envp, num_envp, &i,
 					    buffer, buffer_size, &length,
-					    "PHYSDEVDRIVER=%s", dev->driver->name);
-
-		envp[i] = NULL;
+					    "PHYSDEVDRIVER=%s",
+					    physdev->driver->name);
 	}
 
+	/* terminate, set to next free slot, shrink available space */
+	envp[i] = NULL;
+	envp = &envp[i];
+	num_envp -= i;
+	buffer = &buffer[length];
+	buffer_size -= length;
+
 	return 0;
 }
 

drivers/char/Kconfig

@@ -995,5 +995,7 @@ config MMTIMER
 	  The mmtimer device allows direct userspace access to the
 	  Altix system timer.
 
+source "drivers/char/tpm/Kconfig"
+
 endmenu
 

drivers/char/Makefile

@@ -89,7 +89,7 @@ obj-$(CONFIG_PCMCIA) += pcmcia/
 obj-$(CONFIG_IPMI_HANDLER) += ipmi/
 
 obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o
-
+obj-$(CONFIG_TCG_TPM) += tpm/
 # Files generated that shall be removed upon make clean
 clean-files := consolemap_deftbl.c defkeymap.c qtronixmap.c
 

drivers/char/tpm/Kconfig

+#
+# TPM device configuration
+#
+
+menu "TPM devices"
+
+config TCG_TPM
+	tristate "TPM Hardware Support"
+	depends on EXPERIMENTAL
+	---help---
+	  If you have a TPM security chip in your system, which
+	  implements the Trusted Computing Group's specification,
+	  say Yes and it will be accessible from within Linux.  For
+	  more information see <http://www.trustedcomputinggroup.org>. 
+	  An implementation of the Trusted Software Stack (TSS), the 
+	  userspace enablement piece of the specification, can be 
+	  obtained at: <http://sourceforge.net/projects/trousers>.  To 
+	  compile this driver as a module, choose M here; the module 
+	  will be called tpm. If unsure, say N.
+
+config TCG_NSC
+	tristate "National Semiconductor TPM Interface"
+	depends on TCG_TPM
+	---help---
+	  If you have a TPM security chip from National Semicondutor 
+	  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_nsc.
+
+config TCG_ATMEL
+	tristate "Atmel TPM Interface"
+	depends on TCG_TPM
+	---help---
+	  If you have a TPM security chip from Atmel 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_atmel.
+
+endmenu
+

drivers/char/tpm/Makefile

+#
+# Makefile for the kernel tpm device drivers.
+#
+obj-$(CONFIG_TCG_TPM) += tpm.o
+obj-$(CONFIG_TCG_NSC) += tpm_nsc.o
+obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o
+

drivers/char/tpm/tpm.h

+/*
+ * Copyright (C) 2004 IBM Corporation
+ *
+ * Authors:
+ * 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>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org	 
+ *
+ * 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/module.h>
+#include <linux/version.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/miscdevice.h>
+
+#define TPM_TIMEOUT msecs_to_jiffies(5)
+
+/* TPM addresses */
+#define	TPM_ADDR			0x4E
+#define	TPM_DATA			0x4F
+
+struct tpm_chip;
+
+struct tpm_vendor_specific {
+	u8 req_complete_mask;
+	u8 req_complete_val;
+	u16 base;		/* TPM base address */
+
+	int (*recv) (struct tpm_chip *, u8 *, size_t);
+	int (*send) (struct tpm_chip *, u8 *, size_t);
+	void (*cancel) (struct tpm_chip *);
+	struct miscdevice miscdev;
+};
+
+struct tpm_chip {
+	struct pci_dev *pci_dev;	/* PCI device stuff */
+
+	int dev_num;		/* /dev/tpm# */
+	int num_opens;		/* only one allowed */
+	int time_expired;
+
+	/* Data passed to and from the tpm via the read/write calls */
+	u8 *data_buffer;
+	atomic_t data_pending;
+	struct semaphore buffer_mutex;
+
+	struct timer_list user_read_timer;	/* user needs to claim result */
+	struct semaphore tpm_mutex;	/* tpm is processing */
+	struct timer_list device_timer;	/* tpm is processing */
+	struct semaphore timer_manipulation_mutex;
+
+	struct tpm_vendor_specific *vendor;
+
+	struct list_head list;
+};
+
+static inline int tpm_read_index(int index)
+{
+	outb(index, TPM_ADDR);
+	return inb(TPM_DATA) & 0xFF;
+}
+
+static inline void tpm_write_index(int index, int value)
+{
+	outb(index, TPM_ADDR);
+	outb(value & 0xFF, TPM_DATA);
+}
+
+extern void tpm_time_expired(unsigned long);
+extern int tpm_lpc_bus_init(struct pci_dev *, u16);
+
+extern int tpm_register_hardware(struct pci_dev *,
+				 struct tpm_vendor_specific *);
+extern int tpm_open(struct inode *, struct file *);
+extern int tpm_release(struct inode *, struct file *);
+extern ssize_t tpm_write(struct file *, const char __user *, size_t,
+			 loff_t *);
+extern ssize_t tpm_read(struct file *, char __user *, size_t, loff_t *);
+extern void __devexit tpm_remove(struct pci_dev *);
+extern int tpm_pm_suspend(struct pci_dev *, u32);
+extern int tpm_pm_resume(struct pci_dev *);

drivers/char/tpm/tpm_atmel.c

+/*
+ * Copyright (C) 2004 IBM Corporation
+ *
+ * Authors:
+ * 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>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org	 
+ *
+ * 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 "tpm.h"
+
+/* Atmel definitions */
+#define	TPM_ATML_BASE			0x400
+
+/* write status bits */
+#define	ATML_STATUS_ABORT		0x01
+#define	ATML_STATUS_LASTBYTE		0x04
+
+/* read status bits */
+#define	ATML_STATUS_BUSY		0x01
+#define	ATML_STATUS_DATA_AVAIL		0x02
+#define	ATML_STATUS_REWRITE		0x04
+
+
+static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
+{
+	u8 status, *hdr = buf;
+	u32 size;
+	int i;
+	__be32 *native_size;
+
+	/* start reading header */
+	if (count < 6)
+		return -EIO;
+
+	for (i = 0; i < 6; i++) {
+		status = inb(chip->vendor->base + 1);
+		if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
+			dev_err(&chip->pci_dev->dev,
+				"error reading header\n");
+			return -EIO;
+		}
+		*buf++ = inb(chip->vendor->base);
+	}
+
+	/* size of the data received */
+	native_size = (__force __be32 *) (hdr + 2);
+	size = be32_to_cpu(*native_size);
+
+	if (count < size) {
+		dev_err(&chip->pci_dev->dev,
+			"Recv size(%d) less than available space\n", size);
+		for (; i < size; i++) {	/* clear the waiting data anyway */
+			status = inb(chip->vendor->base + 1);
+			if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
+				dev_err(&chip->pci_dev->dev,
+					"error reading data\n");
+				return -EIO;
+			}
+		}
+		return -EIO;
+	}
+
+	/* read all the data available */
+	for (; i < size; i++) {
+		status = inb(chip->vendor->base + 1);
+		if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
+			dev_err(&chip->pci_dev->dev,
+				"error reading data\n");
+			return -EIO;
+		}
+		*buf++ = inb(chip->vendor->base);
+	}
+
+	/* make sure data available is gone */
+	status = inb(chip->vendor->base + 1);
+	if (status & ATML_STATUS_DATA_AVAIL) {
+		dev_err(&chip->pci_dev->dev, "data available is stuck\n");
+		return -EIO;
+	}
+
+	return size;
+}
+
+static int tpm_atml_send(struct tpm_chip *chip, u8 * buf, size_t count)
+{
+	int i;
+
+	dev_dbg(&chip->pci_dev->dev, "tpm_atml_send: ");
+	for (i = 0; i < count; i++) {
+		dev_dbg(&chip->pci_dev->dev, "0x%x(%d) ", buf[i], buf[i]);
+		outb(buf[i], chip->vendor->base);
+	}
+
+	return count;
+}
+
+static void tpm_atml_cancel(struct tpm_chip *chip)
+{
+	outb(ATML_STATUS_ABORT, chip->vendor->base + 1);
+}
+
+static struct file_operations atmel_ops = {
+	.owner = THIS_MODULE,
+	.llseek = no_llseek,
+	.open = tpm_open,
+	.read = tpm_read,
+	.write = tpm_write,
+	.release = tpm_release,
+};
+
+static struct tpm_vendor_specific tpm_atmel = {
+	.recv = tpm_atml_recv,
+	.send = tpm_atml_send,
+	.cancel = tpm_atml_cancel,
+	.req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL,
+	.req_complete_val = ATML_STATUS_DATA_AVAIL,
+	.base = TPM_ATML_BASE,
+	.miscdev = { .fops = &atmel_ops, },
+};
+
+static int __devinit tpm_atml_init(struct pci_dev *pci_dev,
+				   const struct pci_device_id *pci_id)
+{
+	u8 version[4];
+	int rc = 0;
+
+	if (pci_enable_device(pci_dev))
+		return -EIO;
+
+	if (tpm_lpc_bus_init(pci_dev, TPM_ATML_BASE)) {
+		rc = -ENODEV;
+		goto out_err;
+	}
+
+	/* verify that it is an Atmel part */
+	if (tpm_read_index(4) != 'A' || tpm_read_index(5) != 'T'
+	    || tpm_read_index(6) != 'M' || tpm_read_index(7) != 'L') {
+		rc = -ENODEV;
+		goto out_err;
+	}
+
+	/* query chip for its version number */
+	if ((version[0] = tpm_read_index(0x00)) != 0xFF) {
+		version[1] = tpm_read_index(0x01);
+		version[2] = tpm_read_index(0x02);
+		version[3] = tpm_read_index(0x03);
+	} else {
+		dev_info(&pci_dev->dev, "version query failed\n");
+		rc = -ENODEV;
+		goto out_err;
+	}
+
+	if ((rc = tpm_register_hardware(pci_dev, &tpm_atmel)) < 0)
+		goto out_err;
+
+	dev_info(&pci_dev->dev,
+		 "Atmel TPM version %d.%d.%d.%d\n", version[0], version[1],
+		 version[2], version[3]);
+
+	return 0;
+out_err:
+	pci_disable_device(pci_dev);
+	return rc;
+}
+
+static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)},
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)},
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)},
+	{PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_LPC)},
+	{0,}
+};
+
+MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
+
+static struct pci_driver atmel_pci_driver = {
+	.name = "tpm_atmel",
+	.id_table = tpm_pci_tbl,
+	.probe = tpm_atml_init,
+	.remove = __devexit_p(tpm_remove),
+	.suspend = tpm_pm_suspend,
+	.resume = tpm_pm_resume,
+};
+
+static int __init init_atmel(void)
+{
+	return pci_register_driver(&atmel_pci_driver);
+}
+
+static void __exit cleanup_atmel(void)
+{
+	pci_unregister_driver(&atmel_pci_driver);
+}
+
+module_init(init_atmel);
+module_exit(cleanup_atmel);
+
+MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)");
+MODULE_DESCRIPTION("TPM Driver");
+MODULE_VERSION("2.0");
+MODULE_LICENSE("GPL");

drivers/i2c/i2c-dev.c

@@ -108,13 +108,6 @@ static void return_i2c_dev(struct i2c_dev *i2c_dev)
 	spin_unlock(&i2c_dev_array_lock);
 }
 
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
-{
-	struct i2c_dev *i2c_dev = to_i2c_dev(class_dev);
-	return print_dev_t(buf, MKDEV(I2C_MAJOR, i2c_dev->minor));
-}
-static CLASS_DEVICE_ATTR(dev, S_IRUGO, show_dev, NULL);
-
 static ssize_t show_adapter_name(struct class_device *class_dev, char *buf)
 {
 	struct i2c_dev *i2c_dev = to_i2c_dev(class_dev);
@@ -451,11 +444,11 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
 	else
 		i2c_dev->class_dev.dev = adap->dev.parent;
 	i2c_dev->class_dev.class = &i2c_dev_class;
+	i2c_dev->class_dev.devt = MKDEV(I2C_MAJOR, i2c_dev->minor);
 	snprintf(i2c_dev->class_dev.class_id, BUS_ID_SIZE, "i2c-%d", i2c_dev->minor);
 	retval = class_device_register(&i2c_dev->class_dev);
 	if (retval)
 		goto error;
-	class_device_create_file(&i2c_dev->class_dev, &class_device_attr_dev);
 	class_device_create_file(&i2c_dev->class_dev, &class_device_attr_name);
 	return 0;
 error:

drivers/media/video/videodev.c

@@ -46,15 +46,7 @@ static ssize_t show_name(struct class_device *cd, char *buf)
 	return sprintf(buf,"%.*s\n",(int)sizeof(vfd->name),vfd->name);
 }
 
-static ssize_t show_dev(struct class_device *cd, char *buf)
-{
-	struct video_device *vfd = container_of(cd, struct video_device, class_dev);
-	dev_t dev = MKDEV(VIDEO_MAJOR, vfd->minor);
-	return print_dev_t(buf,dev);
-}
-
 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
-static CLASS_DEVICE_ATTR(dev,  S_IRUGO, show_dev, NULL);
 
 struct video_device *video_device_alloc(void)
 {
@@ -347,12 +339,11 @@ int video_register_device(struct video_device *vfd, int type, int nr)
 	if (vfd->dev)
 		vfd->class_dev.dev = vfd->dev;
 	vfd->class_dev.class       = &video_class;
+	vfd->class_dev.devt       = MKDEV(VIDEO_MAJOR, vfd->minor);
 	strlcpy(vfd->class_dev.class_id, vfd->devfs_name + 4, BUS_ID_SIZE);
 	class_device_register(&vfd->class_dev);
 	class_device_create_file(&vfd->class_dev,
 				 &class_device_attr_name);
-	class_device_create_file(&vfd->class_dev,
-				 &class_device_attr_dev);
 
 #if 1 /* needed until all drivers are fixed */
 	if (!vfd->release)

drivers/sh/Makefile

+#
+# Makefile for the SuperH specific drivers.
+#
+
+obj-$(CONFIG_SUPERHYWAY) += superhyway/
+

drivers/sh/superhyway/Makefile

+#
+# Makefile for the SuperHyway bus drivers.
+#
+
+obj-$(CONFIG_SUPERHYWAY)	+= superhyway.o
+obj-$(CONFIG_SYSFS)		+= superhyway-sysfs.o
+

drivers/sh/superhyway/superhyway-sysfs.c

+/*
+ * drivers/sh/superhyway/superhyway-sysfs.c
+ *
+ * SuperHyway Bus sysfs interface
+ *
+ * Copyright (C) 2004, 2005  Paul Mundt <lethal@linux-sh.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/superhyway.h>
+
+#define superhyway_ro_attr(name, fmt, field)				\
+static ssize_t name##_show(struct device *dev, char *buf)		\
+{									\
+	struct superhyway_device *s = to_superhyway_device(dev);	\
+	return sprintf(buf, fmt, s->field);				\
+}
+
+/* VCR flags */
+superhyway_ro_attr(perr_flags, "0x%02x\n", vcr.perr_flags);
+superhyway_ro_attr(merr_flags, "0x%02x\n", vcr.merr_flags);
+superhyway_ro_attr(mod_vers, "0x%04x\n", vcr.mod_vers);
+superhyway_ro_attr(mod_id, "0x%04x\n", vcr.mod_id);
+superhyway_ro_attr(bot_mb, "0x%02x\n", vcr.bot_mb);
+superhyway_ro_attr(top_mb, "0x%02x\n", vcr.top_mb);
+
+/* Misc */
+superhyway_ro_attr(resource, "0x%08lx\n", resource.start);
+
+struct device_attribute superhyway_dev_attrs[] = {
+	__ATTR_RO(perr_flags),
+	__ATTR_RO(merr_flags),
+	__ATTR_RO(mod_vers),
+	__ATTR_RO(mod_id),
+	__ATTR_RO(bot_mb),
+	__ATTR_RO(top_mb),
+	__ATTR_RO(resource),
+	__ATTR_NULL,
+};
+

drivers/sh/superhyway/superhyway.c

+/*
+ * drivers/sh/superhyway/superhyway.c
+ *
+ * SuperHyway Bus Driver
+ *
+ * Copyright (C) 2004, 2005  Paul Mundt <lethal@linux-sh.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/superhyway.h>
+
+static int superhyway_devices;
+
+static struct device superhyway_bus_device = {
+	.bus_id = "superhyway",
+};
+
+static void superhyway_device_release(struct device *dev)
+{
+	kfree(to_superhyway_device(dev));
+}
+
+/**
+ * superhyway_add_device - Add a SuperHyway module
+ * @mod_id: Module ID (taken from MODULE.VCR.MOD_ID).
+ * @base: Physical address where module is mapped.
+ * @vcr: VCR value.
+ *
+ * This is responsible for adding a new SuperHyway module. This sets up a new
+ * struct superhyway_device for the module being added. Each one of @mod_id,
+ * @base, and @vcr are registered with the new device for further use
+ * elsewhere.
+ *
+ * Devices are initially added in the order that they are scanned (from the
+ * top-down of the memory map), and are assigned an ID based on the order that
+ * they are added. Any manual addition of a module will thus get the ID after
+ * the devices already discovered regardless of where it resides in memory.
+ *
+ * Further work can and should be done in superhyway_scan_bus(), to be sure
+ * that any new modules are properly discovered and subsequently registered.
+ */
+int superhyway_add_device(unsigned int mod_id, unsigned long base,
+			  unsigned long long vcr)
+{
+	struct superhyway_device *dev;
+
+	dev = kmalloc(sizeof(struct superhyway_device), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+
+	memset(dev, 0, sizeof(struct superhyway_device));
+
+	dev->id.id = mod_id;
+	sprintf(dev->name, "SuperHyway device %04x", dev->id.id);
+
+	dev->vcr		= *((struct vcr_info *)(&vcr));
+	dev->resource.name	= dev->name;
+	dev->resource.start	= base;
+	dev->resource.end	= dev->resource.start + 0x01000000;
+	dev->dev.parent		= &superhyway_bus_device;
+	dev->dev.bus		= &superhyway_bus_type;
+	dev->dev.release	= superhyway_device_release;
+
+	sprintf(dev->dev.bus_id, "%02x", superhyway_devices);
+
+	superhyway_devices++;
+
+	return device_register(&dev->dev);
+}
+
+static int __init superhyway_init(void)
+{
+	device_register(&superhyway_bus_device);
+	return superhyway_scan_bus();
+}
+
+postcore_initcall(superhyway_init);
+
+static const struct superhyway_device_id *
+superhyway_match_id(const struct superhyway_device_id *ids,
+		    struct superhyway_device *dev)
+{
+	while (ids->id) {
+		if (ids->id == dev->id.id)
+			return ids;
+
+		ids++;
+	}
+
+	return NULL;
+}
+
+static int superhyway_device_probe(struct device *dev)
+{
+	struct superhyway_device *shyway_dev = to_superhyway_device(dev);
+	struct superhyway_driver *shyway_drv = to_superhyway_driver(dev->driver);
+
+	if (shyway_drv && shyway_drv->probe) {
+		const struct superhyway_device_id *id;
+
+		id = superhyway_match_id(shyway_drv->id_table, shyway_dev);
+		if (id)
+			return shyway_drv->probe(shyway_dev, id);
+	}
+
+	return -ENODEV;
+}
+
+static int superhyway_device_remove(struct device *dev)
+{
+	struct superhyway_device *shyway_dev = to_superhyway_device(dev);
+	struct superhyway_driver *shyway_drv = to_superhyway_driver(dev->driver);
+
+	if (shyway_drv && shyway_drv->remove) {
+		shyway_drv->remove(shyway_dev);
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
+/**
+ * superhyway_register_driver - Register a new SuperHyway driver
+ * @drv: SuperHyway driver to register.
+ *
+ * This registers the passed in @drv. Any devices matching the id table will
+ * automatically be populated and handed off to the driver's specified probe
+ * routine.
+ */
+int superhyway_register_driver(struct superhyway_driver *drv)
+{
+	drv->drv.name	= drv->name;
+	drv->drv.bus	= &superhyway_bus_type;
+	drv->drv.probe	= superhyway_device_probe;
+	drv->drv.remove	= superhyway_device_remove;
+
+	return driver_register(&drv->drv);
+}
+
+/**
+ * superhyway_unregister_driver - Unregister a SuperHyway driver
+ * @drv: SuperHyway driver to unregister.
+ *
+ * This cleans up after superhyway_register_driver(), and should be invoked in
+ * the exit path of any module drivers.
+ */
+void superhyway_unregister_driver(struct superhyway_driver *drv)
+{
+	driver_unregister(&drv->drv);
+}
+
+static int superhyway_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct superhyway_device *shyway_dev = to_superhyway_device(dev);
+	struct superhyway_driver *shyway_drv = to_superhyway_driver(drv);
+	const struct superhyway_device_id *ids = shyway_drv->id_table;
+
+	if (!ids)
+		return -EINVAL;
+	if (superhyway_match_id(ids, shyway_dev))
+		return 1;
+
+	return -ENODEV;
+}
+
+struct bus_type superhyway_bus_type = {
+	.name		= "superhyway",
+	.match		= superhyway_bus_match,
+#ifdef CONFIG_SYSFS
+	.dev_attrs	= superhyway_dev_attrs,
+#endif
+};
+
+static int __init superhyway_bus_init(void)
+{
+	return bus_register(&superhyway_bus_type);
+}
+
+static void __exit superhyway_bus_exit(void)
+{
+	device_unregister(&superhyway_bus_device);
+	bus_unregister(&superhyway_bus_type);
+}
+
+core_initcall(superhyway_bus_init);
+module_exit(superhyway_bus_exit);
+
+EXPORT_SYMBOL(superhyway_bus_type);
+EXPORT_SYMBOL(superhyway_add_device);
+EXPORT_SYMBOL(superhyway_register_driver);
+EXPORT_SYMBOL(superhyway_unregister_driver);
+
+MODULE_LICENSE("GPL");

drivers/usb/core/file.c

@@ -66,16 +66,7 @@ static struct file_operations usb_fops = {
 	.open =		usb_open,
 };
 
-static void release_usb_class_dev(struct class_device *class_dev)
-{
-	dbg("%s - %s", __FUNCTION__, class_dev->class_id);
-	kfree(class_dev);
-}
-
-static struct class usb_class = {
-	.name		= "usb",
-	.release	= &release_usb_class_dev,
-};
+static struct class_simple *usb_class;
 
 int usb_major_init(void)
 {
@@ -87,9 +78,9 @@ int usb_major_init(void)
 		goto out;
 	}
 
-	error = class_register(&usb_class);
-	if (error) {
-		err("class_register failed for usb devices");
+	usb_class = class_simple_create(THIS_MODULE, "usb");
+	if (IS_ERR(usb_class)) {
+		err("class_simple_create failed for usb devices");
 		unregister_chrdev(USB_MAJOR, "usb");
 		goto out;
 	}
@@ -102,18 +93,11 @@ int usb_major_init(void)
 
 void usb_major_cleanup(void)
 {
-	class_unregister(&usb_class);
+	class_simple_destroy(usb_class);
 	devfs_remove("usb");
 	unregister_chrdev(USB_MAJOR, "usb");
 }
 
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
-{
-	int minor = (int)(long)class_get_devdata(class_dev);
-	return print_dev_t(buf, MKDEV(USB_MAJOR, minor));
-}
-static CLASS_DEVICE_ATTR(dev, S_IRUGO, show_dev, NULL);
-
 /**
  * usb_register_dev - register a USB device, and ask for a minor number
  * @intf: pointer to the usb_interface that is being registered
@@ -141,7 +125,6 @@ int usb_register_dev(struct usb_interface *intf,
 	int minor_base = class_driver->minor_base;
 	int minor = 0;
 	char name[BUS_ID_SIZE];
-	struct class_device *class_dev;
 	char *temp;
 
 #ifdef CONFIG_USB_DYNAMIC_MINORS
@@ -181,22 +164,18 @@ int usb_register_dev(struct usb_interface *intf,
 	devfs_mk_cdev(MKDEV(USB_MAJOR, minor), class_driver->mode, name);
 
 	/* create a usb class device for this usb interface */
-	class_dev = kmalloc(sizeof(*class_dev), GFP_KERNEL);
-	if (class_dev) {
-		memset(class_dev, 0x00, sizeof(struct class_device));
-		class_dev->class = &usb_class;
-		class_dev->dev = &intf->dev;
-
-		temp = strrchr(name, '/');
-		if (temp && (temp[1] != 0x00))
-			++temp;
-		else
-			temp = name;
-		snprintf(class_dev->class_id, BUS_ID_SIZE, "%s", temp);
-		class_set_devdata(class_dev, (void *)(long)intf->minor);
-		class_device_register(class_dev);
-		class_device_create_file(class_dev, &class_device_attr_dev);
-		intf->class_dev = class_dev;
+	temp = strrchr(name, '/');
+	if (temp && (temp[1] != 0x00))
+		++temp;
+	else
+		temp = name;
+	intf->class_dev = class_simple_device_add(usb_class, MKDEV(USB_MAJOR, minor), &intf->dev, "%s", temp);
+	if (IS_ERR(intf->class_dev)) {
+		spin_lock (&minor_lock);
+		usb_minors[intf->minor] = NULL;
+		spin_unlock (&minor_lock);
+		devfs_remove (name);
+		retval = PTR_ERR(intf->class_dev);
 	}
 exit:
 	return retval;
@@ -239,11 +218,8 @@ void usb_deregister_dev(struct usb_interface *intf,
 
 	snprintf(name, BUS_ID_SIZE, class_driver->name, intf->minor - minor_base);
 	devfs_remove (name);
-
-	if (intf->class_dev) {
-		class_device_unregister(intf->class_dev);
-		intf->class_dev = NULL;
-	}
+	class_simple_device_remove(MKDEV(USB_MAJOR, intf->minor));
+	intf->class_dev = NULL;
 	intf->minor = -1;
 }
 EXPORT_SYMBOL(usb_deregister_dev);

fs/char_dev.c

@@ -29,7 +29,7 @@ static struct kobj_map *cdev_map;
 /* degrade to linked list for small systems */
 #define MAX_PROBE_HASH (CONFIG_BASE_SMALL ? 1 : 255)
 
-static DEFINE_RWLOCK(chrdevs_lock);
+static DECLARE_MUTEX(chrdevs_lock);
 
 static struct char_device_struct {
 	struct char_device_struct *next;
@@ -55,13 +55,13 @@ int get_chrdev_list(char *page)
 
 	len = sprintf(page, "Character devices:\n");
 
-	read_lock(&chrdevs_lock);
+	down(&chrdevs_lock);
 	for (i = 0; i < ARRAY_SIZE(chrdevs) ; i++) {
 		for (cd = chrdevs[i]; cd; cd = cd->next)
 			len += sprintf(page+len, "%3d %s\n",
 				       cd->major, cd->name);
 	}
-	read_unlock(&chrdevs_lock);
+	up(&chrdevs_lock);
 
 	return len;
 }
@@ -91,7 +91,7 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
 
 	memset(cd, 0, sizeof(struct char_device_struct));
 
-	write_lock_irq(&chrdevs_lock);
+	down(&chrdevs_lock);
 
 	/* temporary */
 	if (major == 0) {
@@ -126,10 +126,10 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
 	}
 	cd->next = *cp;
 	*cp = cd;
-	write_unlock_irq(&chrdevs_lock);
+	up(&chrdevs_lock);
 	return cd;
 out:
-	write_unlock_irq(&chrdevs_lock);
+	up(&chrdevs_lock);
 	kfree(cd);
 	return ERR_PTR(ret);
 }
@@ -140,7 +140,7 @@ __unregister_chrdev_region(unsigned major, unsigned baseminor, int minorct)
 	struct char_device_struct *cd = NULL, **cp;
 	int i = major_to_index(major);
 
-	write_lock_irq(&chrdevs_lock);
+	up(&chrdevs_lock);
 	for (cp = &chrdevs[i]; *cp; cp = &(*cp)->next)
 		if ((*cp)->major == major &&
 		    (*cp)->baseminor == baseminor &&
@@ -150,7 +150,7 @@ __unregister_chrdev_region(unsigned major, unsigned baseminor, int minorct)
 		cd = *cp;
 		*cp = cd->next;
 	}
-	write_unlock_irq(&chrdevs_lock);
+	up(&chrdevs_lock);
 	return cd;
 }
 
@@ -381,8 +381,6 @@ void cdev_del(struct cdev *p)
 }
 
 
-static decl_subsys(cdev, NULL, NULL);
-
 static void cdev_default_release(struct kobject *kobj)
 {
 	struct cdev *p = container_of(kobj, struct cdev, kobj);
@@ -435,13 +433,7 @@ static struct kobject *base_probe(dev_t dev, int *part, void *data)
 
 void __init chrdev_init(void)
 {
-/*
- * Keep cdev_subsys around because (and only because) the kobj_map code
- * depends on the rwsem it contains.  We don't make it public in sysfs,
- * however.
- */
-	subsystem_init(&cdev_subsys);
-	cdev_map = kobj_map_init(base_probe, &cdev_subsys);
+	cdev_map = kobj_map_init(base_probe, &chrdevs_lock);
 }
 
 

fs/debugfs/file.c

@@ -52,7 +52,7 @@ static ssize_t read_file_##type(struct file *file, char __user *user_buf,	\
 	char buf[32];								\
 	type *val = file->private_data;						\
 										\
-	snprintf(buf, sizeof(buf), format, *val);				\
+	snprintf(buf, sizeof(buf), format "\n", *val);				\
 	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));\
 }										\
 static ssize_t write_file_##type(struct file *file, const char __user *user_buf,\
@@ -186,7 +186,7 @@ static ssize_t read_file_bool(struct file *file, char __user *user_buf,
 	char buf[3];
 	u32 *val = file->private_data;
 	
-	if (val)
+	if (*val)
 		buf[0] = 'Y';
 	else
 		buf[0] = 'N';

include/linux/device.h

@@ -15,7 +15,6 @@
 #include <linux/ioport.h>
 #include <linux/kobject.h>
 #include <linux/list.h>
-#include <linux/spinlock.h>
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pm.h>
@@ -102,7 +101,7 @@ struct device_driver {
 	char			* name;
 	struct bus_type		* bus;
 
-	struct semaphore	unload_sem;
+	struct completion	unloaded;
 	struct kobject		kobj;
 	struct list_head	devices;
 
@@ -148,6 +147,7 @@ struct class {
 	struct subsystem	subsys;
 	struct list_head	children;
 	struct list_head	interfaces;
+	struct semaphore	sem;	/* locks both the children and interfaces lists */
 
 	struct class_attribute		* class_attrs;
 	struct class_device_attribute	* class_dev_attrs;
@@ -184,6 +184,7 @@ struct class_device {
 
 	struct kobject		kobj;
 	struct class		* class;	/* required */
+	dev_t			devt;		/* dev_t, creates the sysfs "dev" */
 	struct device		* dev;		/* not necessary, but nice to have */
 	void			* class_data;	/* class-specific data */
 

include/linux/kobj_map.h

@@ -7,6 +7,6 @@ int kobj_map(struct kobj_map *, dev_t, unsigned long, struct module *,
 	     kobj_probe_t *, int (*)(dev_t, void *), void *);
 void kobj_unmap(struct kobj_map *, dev_t, unsigned long);
 struct kobject *kobj_lookup(struct kobj_map *, dev_t, int *);
-struct kobj_map *kobj_map_init(kobj_probe_t *, struct subsystem *);
+struct kobj_map *kobj_map_init(kobj_probe_t *, struct semaphore *);
 
 #endif

include/linux/kobject.h

@@ -20,6 +20,7 @@
 #include <linux/types.h>
 #include <linux/list.h>
 #include <linux/sysfs.h>
+#include <linux/spinlock.h>
 #include <linux/rwsem.h>
 #include <linux/kref.h>
 #include <linux/kobject_uevent.h>
@@ -102,6 +103,7 @@ struct kset {
 	struct subsystem	* subsys;
 	struct kobj_type	* ktype;
 	struct list_head	list;
+	spinlock_t		list_lock;
 	struct kobject		kobj;
 	struct kset_hotplug_ops	* hotplug_ops;
 };

include/linux/kref.h

@@ -26,7 +26,7 @@ struct kref {
 
 void kref_init(struct kref *kref);
 void kref_get(struct kref *kref);
-void kref_put(struct kref *kref, void (*release) (struct kref *kref));
+int kref_put(struct kref *kref, void (*release) (struct kref *kref));
 
 #endif /* __KERNEL__ */
 #endif /* _KREF_H_ */

include/linux/pci_ids.h

@@ -519,6 +519,7 @@
 #define PCI_DEVICE_ID_AMD_OPUS_7449	0x7449
 #	define PCI_DEVICE_ID_AMD_VIPER_7449	PCI_DEVICE_ID_AMD_OPUS_7449
 #define PCI_DEVICE_ID_AMD_8111_LAN	0x7462
+#define PCI_DEVICE_ID_AMD_8111_LPC	0x7468
 #define PCI_DEVICE_ID_AMD_8111_IDE	0x7469
 #define PCI_DEVICE_ID_AMD_8111_SMBUS2	0x746a
 #define PCI_DEVICE_ID_AMD_8111_SMBUS	0x746b

include/linux/superhyway.h

+/*
+ * include/linux/superhyway.h
+ *
+ * SuperHyway Bus definitions
+ *
+ * Copyright (C) 2004, 2005  Paul Mundt <lethal@linux-sh.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __LINUX_SUPERHYWAY_H
+#define __LINUX_SUPERHYWAY_H
+
+#include <linux/device.h>
+
+/*
+ * SuperHyway IDs
+ */
+#define SUPERHYWAY_DEVICE_ID_SH5_DMAC	0x0183
+
+struct vcr_info {
+	u8	perr_flags;	/* P-port Error flags */
+	u8	merr_flags;	/* Module Error flags */
+	u16	mod_vers;	/* Module Version */
+	u16	mod_id;		/* Module ID */
+	u8	bot_mb;		/* Bottom Memory block */
+	u8	top_mb;		/* Top Memory block */
+};
+
+struct superhyway_device_id {
+	unsigned int id;
+	unsigned long driver_data;
+};
+
+struct superhyway_device;
+extern struct bus_type superhyway_bus_type;
+
+struct superhyway_driver {
+	char *name;
+
+	const struct superhyway_device_id *id_table;
+	struct device_driver drv;
+
+	int (*probe)(struct superhyway_device *dev, const struct superhyway_device_id *id);
+	void (*remove)(struct superhyway_device *dev);
+};
+
+#define to_superhyway_driver(d)	container_of((d), struct superhyway_driver, drv)
+
+struct superhyway_device {
+	char name[32];
+
+	struct device dev;
+
+	struct superhyway_device_id id;
+	struct superhyway_driver *drv;
+
+	struct resource resource;
+	struct vcr_info vcr;
+};
+
+#define to_superhyway_device(d)	container_of((d), struct superhyway_device, dev)
+
+#define superhyway_get_drvdata(d)	dev_get_drvdata(&(d)->dev)
+#define superhyway_set_drvdata(d,p)	dev_set_drvdata(&(d)->dev, (p))
+
+extern int superhyway_scan_bus(void);
+
+/* drivers/sh/superhyway/superhyway.c */
+int superhyway_register_driver(struct superhyway_driver *);
+void superhyway_unregister_driver(struct superhyway_driver *);
+int superhyway_add_device(unsigned int, unsigned long, unsigned long long);
+
+/* drivers/sh/superhyway/superhyway-sysfs.c */
+extern struct device_attribute superhyway_dev_attrs[];
+
+#endif /* __LINUX_SUPERHYWAY_H */
+

lib/kobject.c

@@ -140,9 +140,9 @@ void kobject_init(struct kobject * kobj)
 static void unlink(struct kobject * kobj)
 {
 	if (kobj->kset) {
-		down_write(&kobj->kset->subsys->rwsem);
+		spin_lock(&kobj->kset->list_lock);
 		list_del_init(&kobj->entry);
-		up_write(&kobj->kset->subsys->rwsem);
+		spin_unlock(&kobj->kset->list_lock);
 	}
 	kobject_put(kobj);
 }
@@ -168,13 +168,13 @@ int kobject_add(struct kobject * kobj)
 		 kobj->kset ? kobj->kset->kobj.name : "<NULL>" );
 
 	if (kobj->kset) {
-		down_write(&kobj->kset->subsys->rwsem);
+		spin_lock(&kobj->kset->list_lock);
 
 		if (!parent)
 			parent = kobject_get(&kobj->kset->kobj);
 
 		list_add_tail(&kobj->entry,&kobj->kset->list);
-		up_write(&kobj->kset->subsys->rwsem);
+		spin_unlock(&kobj->kset->list_lock);
 	}
 	kobj->parent = parent;
 
@@ -380,6 +380,7 @@ void kset_init(struct kset * k)
 {
 	kobject_init(&k->kobj);
 	INIT_LIST_HEAD(&k->list);
+	spin_lock_init(&k->list_lock);
 }
 
 
@@ -444,7 +445,7 @@ struct kobject * kset_find_obj(struct kset * kset, const char * name)
 	struct list_head * entry;
 	struct kobject * ret = NULL;
 
-	down_read(&kset->subsys->rwsem);
+	spin_lock(&kset->list_lock);
 	list_for_each(entry,&kset->list) {
 		struct kobject * k = to_kobj(entry);
 		if (kobject_name(k) && !strcmp(kobject_name(k),name)) {
@@ -452,7 +453,7 @@ struct kobject * kset_find_obj(struct kset * kset, const char * name)
 			break;
 		}
 	}
-	up_read(&kset->subsys->rwsem);
+	spin_unlock(&kset->list_lock);
 	return ret;
 }
 
@@ -524,7 +525,6 @@ void subsys_remove_file(struct subsystem * s, struct subsys_attribute * a)
 	}
 }
 
-EXPORT_SYMBOL(kobject_get_path);
 EXPORT_SYMBOL(kobject_init);
 EXPORT_SYMBOL(kobject_register);
 EXPORT_SYMBOL(kobject_unregister);
@@ -532,7 +532,6 @@ EXPORT_SYMBOL(kobject_get);
 EXPORT_SYMBOL(kobject_put);
 EXPORT_SYMBOL(kobject_add);
 EXPORT_SYMBOL(kobject_del);
-EXPORT_SYMBOL(kobject_rename);
 
 EXPORT_SYMBOL(kset_register);
 EXPORT_SYMBOL(kset_unregister);

lib/kref.c

@@ -42,14 +42,21 @@ void kref_get(struct kref *kref)
  *	     in as this function.
  *
  * Decrement the refcount, and if 0, call release().
+ * Return 1 if the object was removed, otherwise return 0.  Beware, if this
+ * function returns 0, you still can not count on the kref from remaining in
+ * memory.  Only use the return value if you want to see if the kref is now
+ * gone, not present.
  */
-void kref_put(struct kref *kref, void (*release) (struct kref *kref))
+int kref_put(struct kref *kref, void (*release)(struct kref *kref))
 {
 	WARN_ON(release == NULL);
 	WARN_ON(release == (void (*)(struct kref *))kfree);
 
-	if (atomic_dec_and_test(&kref->refcount))
+	if (atomic_dec_and_test(&kref->refcount)) {
 		release(kref);
+		return 1;
+	}
+	return 0;
 }
 
 EXPORT_SYMBOL(kref_init);