Merge tag 'cris-for-linus' of git://jni.nu/cris

Pull CRIS changes from Jesper Nilsson:
 "No major changes here, but fixes some compile errors for CRIS, some
  small style issues, some documentation and as a bonus nukes a couple
  of obsolete rtc-files and related code."

* tag 'cris-for-linus' of git://jni.nu/cris:
  cris: Remove old legacy "-traditional" flag from arch-v10/lib/Makefile
  CRIS: Remove legacy RTC drivers
  cris/mm/fault.c: Port OOM changes to do_page_fault
  cris:fix the wrong function declear
  CRIS: Add _sdata to vmlinux.lds.S
  cris: posix_types.h, include asm-generic/posix_types.h
  CRIS: Update documentation
  cris/arch-v32: cryptocop: Use kzalloc
  net:removed the unused variable
  cris:removed the unused variable
  CRISv32: Correct name of read_mostly section.

Documentation/cris/README

-Linux 2.4 on the CRIS architecture
-==================================
-$Id: README,v 1.7 2001/04/19 12:38:32 bjornw Exp $
+Linux on the CRIS architecture
+==============================
 
-This is a port of Linux 2.4 to Axis Communications ETRAX 100LX embedded 
-network CPU. For more information about CRIS and ETRAX please see further
-below.
+This is a port of Linux to Axis Communications ETRAX 100LX,
+ETRAX FS and ARTPEC-3 embedded network CPUs.
+
+For more information about CRIS and ETRAX please see further below.
 
 In order to compile this you need a version of gcc with support for the
-ETRAX chip family. Please see this link for more information on how to 
+ETRAX chip family. Please see this link for more information on how to
 download the compiler and other tools useful when building and booting
 software for the ETRAX platform:
 
-http://developer.axis.com/doc/software/devboard_lx/install-howto.html
-
-<more specific information should come in this document later>
+http://developer.axis.com/wiki/doku.php?id=axis:install-howto-2_20
 
 What is CRIS ?
 --------------
 
 CRIS is an acronym for 'Code Reduced Instruction Set'. It is the CPU
 architecture in Axis Communication AB's range of embedded network CPU's,
-called ETRAX. The latest CPU is called ETRAX 100LX, where LX stands for
-'Linux' because the chip was designed to be a good host for the Linux
-operating system.
+called ETRAX.
 
 The ETRAX 100LX chip
 --------------------
 
-For reference, please see the press-release:
+For reference, please see the following link:
 
-http://www.axis.com/news/us/001101_etrax.htm
+http://www.axis.com/products/dev_etrax_100lx/index.htm
 
-The ETRAX 100LX is a 100 MIPS processor with 8kB cache, MMU, and a very broad 
-range of  built-in interfaces, all with modern scatter/gather DMA.
+The ETRAX 100LX is a 100 MIPS processor with 8kB cache, MMU, and a very broad
+range of built-in interfaces, all with modern scatter/gather DMA.
 
 Memory interfaces:
 
@@ -51,20 +47,28 @@ I/O interfaces:
 	* SCSI
 	* two parallel-ports
 	* two generic 8-bit ports
-	
-	(not all interfaces are available at the same time due to chip pin 
+
+	(not all interfaces are available at the same time due to chip pin
          multiplexing)
 
-The previous version of the ETRAX, the ETRAX 100, sits in almost all of
-Axis shipping thin-servers like the Axis 2100 web camera or the ETRAX 100
-developer-board. It lacks an MMU so the Linux we run on that is a version
-of uClinux (Linux 2.0 without MM-support) ported to the CRIS architecture.
-The new Linux 2.4 port has full MM and needs a CPU with an MMU, so it will
-not run on the ETRAX 100.
+ETRAX 100LX is CRISv10 architecture.
+
+
+The ETRAX FS and ARTPEC-3 chips
+-------------------------------
 
-A version of the Axis developer-board with ETRAX 100LX (running Linux
-2.4) is now available. For more information please see developer.axis.com.
+The ETRAX FS is a 200MHz 32-bit RISC processor with on-chip 16kB
+I-cache and 16kB D-cache and with a wide range of device interfaces
+including multiple high speed serial ports and an integrated USB 1.1 PHY.
 
+The ARTPEC-3 is a variant of the ETRAX FS with additional IO-units
+used by the Axis Communications network cameras.
+
+See below link for more information:
+
+http://www.axis.com/products/dev_etrax_fs/index.htm
+
+ETRAX FS and ARTPEC-3 are both CRISv32 architectures.
 
 Bootlog
 -------
@@ -182,10 +186,6 @@ SwapFree:            0 kB
 -rwxr-xr-x  1 342      100         16252  Jan 01 00:00 telnetd
 
 
-(All programs are statically linked to the libc at this point - we have not ported the
- shared libraries yet)
-
-
 
 
 

arch/cris/arch-v10/drivers/pcf8563.c

-/*
- * PCF8563 RTC
- *
- * From Phillips' datasheet:
- *
- * The PCF8563 is a CMOS real-time clock/calendar optimized for low power
- * consumption. A programmable clock output, interrupt output and voltage
- * low detector are also provided. All address and data are transferred
- * serially via two-line bidirectional I2C-bus. Maximum bus speed is
- * 400 kbits/s. The built-in word address register is incremented
- * automatically after each written or read byte.
- *
- * Copyright (c) 2002-2007, Axis Communications AB
- * All rights reserved.
- *
- * Author: Tobias Anderberg <tobiasa@axis.com>.
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/ioctl.h>
-#include <linux/delay.h>
-#include <linux/bcd.h>
-#include <linux/mutex.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/rtc.h>
-
-#include "i2c.h"
-
-#define PCF8563_MAJOR 121	/* Local major number. */
-#define DEVICE_NAME "rtc"	/* Name which is registered in /proc/devices. */
-#define PCF8563_NAME "PCF8563"
-#define DRIVER_VERSION "$Revision: 1.24 $"
-
-/* I2C bus slave registers. */
-#define RTC_I2C_READ		0xa3
-#define RTC_I2C_WRITE		0xa2
-
-/* Two simple wrapper macros, saves a few keystrokes. */
-#define rtc_read(x) i2c_readreg(RTC_I2C_READ, x)
-#define rtc_write(x,y) i2c_writereg(RTC_I2C_WRITE, x, y)
-
-static DEFINE_MUTEX(pcf8563_mutex);
-static DEFINE_MUTEX(rtc_lock); /* Protect state etc */
-
-static const unsigned char days_in_month[] =
-	{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
-
-static long pcf8563_unlocked_ioctl(struct file *, unsigned int, unsigned long);
-
-/* Cache VL bit value read at driver init since writing the RTC_SECOND
- * register clears the VL status.
- */
-static int voltage_low;
-
-static const struct file_operations pcf8563_fops = {
-	.owner = THIS_MODULE,
-	.unlocked_ioctl = pcf8563_unlocked_ioctl,
-	.llseek		= noop_llseek,
-};
-
-unsigned char
-pcf8563_readreg(int reg)
-{
-	unsigned char res = rtc_read(reg);
-
-	/* The PCF8563 does not return 0 for unimplemented bits. */
-	switch (reg) {
-	case RTC_SECONDS:
-	case RTC_MINUTES:
-		res &= 0x7F;
-		break;
-	case RTC_HOURS:
-	case RTC_DAY_OF_MONTH:
-		res &= 0x3F;
-		break;
-	case RTC_WEEKDAY:
-		res &= 0x07;
-		break;
-	case RTC_MONTH:
-		res &= 0x1F;
-		break;
-	case RTC_CONTROL1:
-		res &= 0xA8;
-		break;
-	case RTC_CONTROL2:
-		res &= 0x1F;
-		break;
-	case RTC_CLOCKOUT_FREQ:
-	case RTC_TIMER_CONTROL:
-		res &= 0x83;
-		break;
-	}
-	return res;
-}
-
-void
-pcf8563_writereg(int reg, unsigned char val)
-{
-	rtc_write(reg, val);
-}
-
-void
-get_rtc_time(struct rtc_time *tm)
-{
-	tm->tm_sec  = rtc_read(RTC_SECONDS);
-	tm->tm_min  = rtc_read(RTC_MINUTES);
-	tm->tm_hour = rtc_read(RTC_HOURS);
-	tm->tm_mday = rtc_read(RTC_DAY_OF_MONTH);
-	tm->tm_wday = rtc_read(RTC_WEEKDAY);
-	tm->tm_mon  = rtc_read(RTC_MONTH);
-	tm->tm_year = rtc_read(RTC_YEAR);
-
-	if (tm->tm_sec & 0x80) {
-		printk(KERN_ERR "%s: RTC Voltage Low - reliable date/time "
-		       "information is no longer guaranteed!\n", PCF8563_NAME);
-	}
-
-	tm->tm_year  = bcd2bin(tm->tm_year) +
-		       ((tm->tm_mon & 0x80) ? 100 : 0);
-	tm->tm_sec  &= 0x7F;
-	tm->tm_min  &= 0x7F;
-	tm->tm_hour &= 0x3F;
-	tm->tm_mday &= 0x3F;
-	tm->tm_wday &= 0x07; /* Not coded in BCD. */
-	tm->tm_mon  &= 0x1F;
-
-	tm->tm_sec = bcd2bin(tm->tm_sec);
-	tm->tm_min = bcd2bin(tm->tm_min);
-	tm->tm_hour = bcd2bin(tm->tm_hour);
-	tm->tm_mday = bcd2bin(tm->tm_mday);
-	tm->tm_mon = bcd2bin(tm->tm_mon);
-	tm->tm_mon--; /* Month is 1..12 in RTC but 0..11 in linux */
-}
-
-int __init
-pcf8563_init(void)
-{
-	static int res;
-	static int first = 1;
-
-	if (!first)
-		return res;
-	first = 0;
-
-	/* Initiate the i2c protocol. */
-	res = i2c_init();
-	if (res < 0) {
-		printk(KERN_CRIT "pcf8563_init: Failed to init i2c.\n");
-		return res;
-	}
-
-	/*
-	 * First of all we need to reset the chip. This is done by
-	 * clearing control1, control2 and clk freq and resetting
-	 * all alarms.
-	 */
-	if (rtc_write(RTC_CONTROL1, 0x00) < 0)
-		goto err;
-
-	if (rtc_write(RTC_CONTROL2, 0x00) < 0)
-		goto err;
-
-	if (rtc_write(RTC_CLOCKOUT_FREQ, 0x00) < 0)
-		goto err;
-
-	if (rtc_write(RTC_TIMER_CONTROL, 0x03) < 0)
-		goto err;
-
-	/* Reset the alarms. */
-	if (rtc_write(RTC_MINUTE_ALARM, 0x80) < 0)
-		goto err;
-
-	if (rtc_write(RTC_HOUR_ALARM, 0x80) < 0)
-		goto err;
-
-	if (rtc_write(RTC_DAY_ALARM, 0x80) < 0)
-		goto err;
-
-	if (rtc_write(RTC_WEEKDAY_ALARM, 0x80) < 0)
-		goto err;
-
-	/* Check for low voltage, and warn about it. */
-	if (rtc_read(RTC_SECONDS) & 0x80) {
-		voltage_low = 1;
-		printk(KERN_WARNING "%s: RTC Voltage Low - reliable "
-		       "date/time information is no longer guaranteed!\n",
-		       PCF8563_NAME);
-	}
-
-	return res;
-
-err:
-	printk(KERN_INFO "%s: Error initializing chip.\n", PCF8563_NAME);
-	res = -1;
-	return res;
-}
-
-void __exit
-pcf8563_exit(void)
-{
-	unregister_chrdev(PCF8563_MAJOR, DEVICE_NAME);
-}
-
-/*
- * ioctl calls for this driver. Why return -ENOTTY upon error? Because
- * POSIX says so!
- */
-static int pcf8563_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-	/* Some sanity checks. */
-	if (_IOC_TYPE(cmd) != RTC_MAGIC)
-		return -ENOTTY;
-
-	if (_IOC_NR(cmd) > RTC_MAX_IOCTL)
-		return -ENOTTY;
-
-	switch (cmd) {
-	case RTC_RD_TIME:
-	{
-		struct rtc_time tm;
-
-		mutex_lock(&rtc_lock);
-		memset(&tm, 0, sizeof tm);
-		get_rtc_time(&tm);
-
-		if (copy_to_user((struct rtc_time *) arg, &tm,
-				 sizeof tm)) {
-			mutex_unlock(&rtc_lock);
-			return -EFAULT;
-		}
-
-		mutex_unlock(&rtc_lock);
-
-		return 0;
-	}
-	case RTC_SET_TIME:
-	{
-		int leap;
-		int year;
-		int century;
-		struct rtc_time tm;
-
-		memset(&tm, 0, sizeof tm);
-		if (!capable(CAP_SYS_TIME))
-			return -EPERM;
-
-		if (copy_from_user(&tm, (struct rtc_time *) arg, sizeof tm))
-			return -EFAULT;
-
-		/* Convert from struct tm to struct rtc_time. */
-		tm.tm_year += 1900;
-		tm.tm_mon += 1;
-
-		/*
-		 * Check if tm.tm_year is a leap year. A year is a leap
-		 * year if it is divisible by 4 but not 100, except
-		 * that years divisible by 400 _are_ leap years.
-		 */
-		year = tm.tm_year;
-		leap = (tm.tm_mon == 2) &&
-			((year % 4 == 0 && year % 100 != 0) || year % 400 == 0);
-
-		/* Perform some sanity checks. */
-		if ((tm.tm_year < 1970) ||
-		    (tm.tm_mon > 12) ||
-		    (tm.tm_mday == 0) ||
-		    (tm.tm_mday > days_in_month[tm.tm_mon] + leap) ||
-		    (tm.tm_wday >= 7) ||
-		    (tm.tm_hour >= 24) ||
-		    (tm.tm_min >= 60) ||
-		    (tm.tm_sec >= 60))
-			return -EINVAL;
-
-		century = (tm.tm_year >= 2000) ? 0x80 : 0;
-		tm.tm_year = tm.tm_year % 100;
-
-		tm.tm_year = bin2bcd(tm.tm_year);
-		tm.tm_mon = bin2bcd(tm.tm_mon);
-		tm.tm_mday = bin2bcd(tm.tm_mday);
-		tm.tm_hour = bin2bcd(tm.tm_hour);
-		tm.tm_min = bin2bcd(tm.tm_min);
-		tm.tm_sec = bin2bcd(tm.tm_sec);
-		tm.tm_mon |= century;
-
-		mutex_lock(&rtc_lock);
-
-		rtc_write(RTC_YEAR, tm.tm_year);
-		rtc_write(RTC_MONTH, tm.tm_mon);
-		rtc_write(RTC_WEEKDAY, tm.tm_wday); /* Not coded in BCD. */
-		rtc_write(RTC_DAY_OF_MONTH, tm.tm_mday);
-		rtc_write(RTC_HOURS, tm.tm_hour);
-		rtc_write(RTC_MINUTES, tm.tm_min);
-		rtc_write(RTC_SECONDS, tm.tm_sec);
-
-		mutex_unlock(&rtc_lock);
-
-		return 0;
-	}
-	case RTC_VL_READ:
-		if (voltage_low) {
-			printk(KERN_ERR "%s: RTC Voltage Low - "
-			       "reliable date/time information is no "
-			       "longer guaranteed!\n", PCF8563_NAME);
-		}
-
-		if (copy_to_user((int *) arg, &voltage_low, sizeof(int)))
-			return -EFAULT;
-		return 0;
-
-	case RTC_VL_CLR:
-	{
-		/* Clear the VL bit in the seconds register in case
-		 * the time has not been set already (which would
-		 * have cleared it). This does not really matter
-		 * because of the cached voltage_low value but do it
-		 * anyway for consistency. */
-
-		int ret = rtc_read(RTC_SECONDS);
-
-		rtc_write(RTC_SECONDS, (ret & 0x7F));
-
-		/* Clear the cached value. */
-		voltage_low = 0;
-
-		return 0;
-	}
-	default:
-		return -ENOTTY;
-	}
-
-	return 0;
-}
-
-static long pcf8563_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-	int ret;
-
-	mutex_lock(&pcf8563_mutex);
-	ret = pcf8563_ioctl(filp, cmd, arg);
-	mutex_unlock(&pcf8563_mutex);
-
-	return ret;
-}
-
-static int __init pcf8563_register(void)
-{
-	if (pcf8563_init() < 0) {
-		printk(KERN_INFO "%s: Unable to initialize Real-Time Clock "
-		       "Driver, %s\n", PCF8563_NAME, DRIVER_VERSION);
-		return -1;
-	}
-
-	if (register_chrdev(PCF8563_MAJOR, DEVICE_NAME, &pcf8563_fops) < 0) {
-		printk(KERN_INFO "%s: Unable to get major number %d for RTC device.\n",
-		       PCF8563_NAME, PCF8563_MAJOR);
-		return -1;
-	}
-
-	printk(KERN_INFO "%s Real-Time Clock Driver, %s\n", PCF8563_NAME,
-	       DRIVER_VERSION);
-
-	/* Check for low voltage, and warn about it. */
-	if (voltage_low) {
-		printk(KERN_WARNING "%s: RTC Voltage Low - reliable date/time "
-		       "information is no longer guaranteed!\n", PCF8563_NAME);
-	}
-
-	return 0;
-}
-
-module_init(pcf8563_register);
-module_exit(pcf8563_exit);

arch/cris/arch-v10/kernel/fasttimer.c

@@ -21,8 +21,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/delay.h>
-#include <asm/rtc.h>
-
 
 #include <arch/svinto.h>
 #include <asm/fasttimer.h>

arch/cris/arch-v10/kernel/kgdb.c

@@ -264,7 +264,7 @@ static int write_register (int regno, char *val);
 
 /* Write a value to a specified register in the stack of a thread other
    than the current thread. */
-static write_stack_register (int thread_id, int regno, char *valptr);
+static int write_stack_register(int thread_id, int regno, char *valptr);
 
 /* Read a value from a specified register in the register image. Returns the
    status of the read operation. The register value is returned in valptr. */

arch/cris/arch-v10/kernel/time.c

@@ -19,16 +19,12 @@
 #include <asm/signal.h>
 #include <asm/io.h>
 #include <asm/delay.h>
-#include <asm/rtc.h>
 #include <asm/irq_regs.h>
 
 /* define this if you need to use print_timestamp */
 /* it will make jiffies at 96 hz instead of 100 hz though */
 #undef USE_CASCADE_TIMERS
 
-extern int set_rtc_mmss(unsigned long nowtime);
-extern int have_rtc;
-
 unsigned long get_ns_in_jiffie(void)
 {
 	unsigned char timer_count, t1;
@@ -203,11 +199,6 @@ time_init(void)
 	 */
 	loops_per_usec = 50;
 
-	if(RTC_INIT() < 0)
-		have_rtc = 0;
-	else
-		have_rtc = 1;
-
 	/* Setup the etrax timers
 	 * Base frequency is 25000 hz, divider 250 -> 100 HZ
 	 * In normal mode, we use timer0, so timer1 is free. In cascade

arch/cris/arch-v10/lib/Makefile

@@ -2,8 +2,5 @@
 # Makefile for Etrax-specific library files..
 #
 
-
-EXTRA_AFLAGS := -traditional
-
 lib-y  = checksum.o checksumcopy.o string.o usercopy.o memset.o csumcpfruser.o
 

arch/cris/arch-v32/drivers/cryptocop.c

@@ -1394,11 +1394,10 @@ static int create_md5_pad(int alloc_flag, unsigned long long hashed_length, char
 
 	if (padlen < MD5_MIN_PAD_LENGTH) padlen += MD5_BLOCK_LENGTH;
 
-	p = kmalloc(padlen, alloc_flag);
+	p = kzalloc(padlen, alloc_flag);
 	if (!p) return -ENOMEM;
 
 	*p = 0x80;
-	memset(p+1, 0, padlen - 1);
 
 	DEBUG(printk("create_md5_pad: hashed_length=%lld bits == %lld bytes\n", bit_length, hashed_length));
 
@@ -1426,11 +1425,10 @@ static int create_sha1_pad(int alloc_flag, unsigned long long hashed_length, cha
 
 	if (padlen < SHA1_MIN_PAD_LENGTH) padlen += SHA1_BLOCK_LENGTH;
 
-	p = kmalloc(padlen, alloc_flag);
+	p = kzalloc(padlen, alloc_flag);
 	if (!p) return -ENOMEM;
 
 	*p = 0x80;
-	memset(p+1, 0, padlen - 1);
 
 	DEBUG(printk("create_sha1_pad: hashed_length=%lld bits == %lld bytes\n", bit_length, hashed_length));
 

arch/cris/arch-v32/kernel/ptrace.c

@@ -114,8 +114,6 @@ void user_disable_single_step(struct task_struct *child)
 void
 ptrace_disable(struct task_struct *child)
 {
-	unsigned long tmp;
-
 	/* Deconfigure SPC and S-bit. */
 	user_disable_single_step(child);
 	put_reg(child, PT_SPC, 0);

arch/cris/arch-v32/kernel/time.c

@@ -18,7 +18,6 @@
 #include <asm/signal.h>
 #include <asm/io.h>
 #include <asm/delay.h>
-#include <asm/rtc.h>
 #include <asm/irq.h>
 #include <asm/irq_regs.h>
 
@@ -67,7 +66,6 @@ unsigned long timer_regs[NR_CPUS] =
 };
 
 extern int set_rtc_mmss(unsigned long nowtime);
-extern int have_rtc;
 
 #ifdef CONFIG_CPU_FREQ
 static int
@@ -265,11 +263,6 @@ void __init time_init(void)
 	 */
 	loops_per_usec = 50;
 
-	if(RTC_INIT() < 0)
-		have_rtc = 0;
-	else
-		have_rtc = 1;
-
 	/* Start CPU local timer. */
 	cris_timer_init();
 

arch/cris/include/arch-v32/arch/cache.h

@@ -7,7 +7,7 @@
 #define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
 
-#define __read_mostly __attribute__((__section__(".data.read_mostly")))
+#define __read_mostly __attribute__((__section__(".data..read_mostly")))
 
 void flush_dma_list(dma_descr_data *descr);
 void flush_dma_descr(dma_descr_data *descr, int flush_buf);

arch/cris/include/asm/Kbuild

@@ -6,5 +6,4 @@ header-y += arch-v32/
 header-y += ethernet.h
 header-y += etraxgpio.h
 header-y += rs485.h
-header-y += rtc.h
 header-y += sync_serial.h

arch/cris/include/asm/posix_types.h

@@ -33,4 +33,6 @@ typedef int		__kernel_ptrdiff_t;
 typedef unsigned short	__kernel_old_dev_t;
 #define __kernel_old_dev_t __kernel_old_dev_t
 
+#include <asm-generic/posix_types.h>
+
 #endif /* __ARCH_CRIS_POSIX_TYPES_H */

arch/cris/include/asm/rtc.h

-
-#ifndef __RTC_H__
-#define __RTC_H__
-
-#ifdef CONFIG_ETRAX_DS1302
-   /* Dallas DS1302 clock/calendar register numbers. */
-#  define RTC_SECONDS      0
-#  define RTC_MINUTES      1
-#  define RTC_HOURS        2
-#  define RTC_DAY_OF_MONTH 3
-#  define RTC_MONTH        4
-#  define RTC_WEEKDAY      5
-#  define RTC_YEAR         6
-#  define RTC_CONTROL      7
-
-   /* Bits in CONTROL register. */
-#  define RTC_CONTROL_WRITEPROTECT	0x80
-#  define RTC_TRICKLECHARGER		8
-
-  /* Bits in TRICKLECHARGER register TCS TCS TCS TCS DS DS RS RS. */
-#  define RTC_TCR_PATTERN	0xA0	/* 1010xxxx */
-#  define RTC_TCR_1DIOD		0x04	/* xxxx01xx */
-#  define RTC_TCR_2DIOD		0x08	/* xxxx10xx */
-#  define RTC_TCR_DISABLED	0x00	/* xxxxxx00 Disabled */
-#  define RTC_TCR_2KOHM		0x01	/* xxxxxx01 2KOhm */
-#  define RTC_TCR_4KOHM		0x02	/* xxxxxx10 4kOhm */
-#  define RTC_TCR_8KOHM		0x03	/* xxxxxx11 8kOhm */
-
-#elif defined(CONFIG_ETRAX_PCF8563)
-   /* I2C bus slave registers. */
-#  define RTC_I2C_READ		0xa3
-#  define RTC_I2C_WRITE		0xa2
-
-   /* Phillips PCF8563 registers. */
-#  define RTC_CONTROL1		0x00		/* Control/Status register 1. */
-#  define RTC_CONTROL2		0x01		/* Control/Status register 2. */
-#  define RTC_CLOCKOUT_FREQ	0x0d		/* CLKOUT frequency. */
-#  define RTC_TIMER_CONTROL	0x0e		/* Timer control. */
-#  define RTC_TIMER_CNTDOWN	0x0f		/* Timer countdown. */
-
-   /* BCD encoded clock registers. */
-#  define RTC_SECONDS		0x02
-#  define RTC_MINUTES		0x03
-#  define RTC_HOURS		0x04
-#  define RTC_DAY_OF_MONTH	0x05
-#  define RTC_WEEKDAY		0x06	/* Not coded in BCD! */
-#  define RTC_MONTH		0x07
-#  define RTC_YEAR		0x08
-#  define RTC_MINUTE_ALARM	0x09
-#  define RTC_HOUR_ALARM	0x0a
-#  define RTC_DAY_ALARM		0x0b
-#  define RTC_WEEKDAY_ALARM 0x0c
-
-#endif
-
-#ifdef CONFIG_ETRAX_DS1302
-extern unsigned char ds1302_readreg(int reg);
-extern void ds1302_writereg(int reg, unsigned char val);
-extern int ds1302_init(void);
-#  define CMOS_READ(x) ds1302_readreg(x)
-#  define CMOS_WRITE(val,reg) ds1302_writereg(reg,val)
-#  define RTC_INIT() ds1302_init()
-#elif defined(CONFIG_ETRAX_PCF8563)
-extern unsigned char pcf8563_readreg(int reg);
-extern void pcf8563_writereg(int reg, unsigned char val);
-extern int pcf8563_init(void);
-#  define CMOS_READ(x) pcf8563_readreg(x)
-#  define CMOS_WRITE(val,reg) pcf8563_writereg(reg,val)
-#  define RTC_INIT() pcf8563_init()
-#else
-  /* No RTC configured so we shouldn't try to access any. */
-#  define CMOS_READ(x) 42
-#  define CMOS_WRITE(x,y)
-#  define RTC_INIT() (-1)
-#endif
-
-/*
- * The struct used to pass data via the following ioctl. Similar to the
- * struct tm in <time.h>, but it needs to be here so that the kernel
- * source is self contained, allowing cross-compiles, etc. etc.
- */
-struct rtc_time {
-	int tm_sec;
-	int tm_min;
-	int tm_hour;
-	int tm_mday;
-	int tm_mon;
-	int tm_year;
-	int tm_wday;
-	int tm_yday;
-	int tm_isdst;
-};
-
-/* ioctl() calls that are permitted to the /dev/rtc interface. */
-#define RTC_MAGIC 'p'
-/* Read RTC time. */
-#define RTC_RD_TIME		_IOR(RTC_MAGIC, 0x09, struct rtc_time)
-/* Set RTC time. */
-#define RTC_SET_TIME		_IOW(RTC_MAGIC, 0x0a, struct rtc_time)
-#define RTC_SET_CHARGE		_IOW(RTC_MAGIC, 0x0b, int)
-/* Voltage low detector */
-#define RTC_VL_READ		_IOR(RTC_MAGIC, 0x13, int)
-/* Clear voltage low information */
-#define RTC_VL_CLR		_IO(RTC_MAGIC, 0x14)
-#define RTC_MAX_IOCTL 0x14
-
-#endif /* __RTC_H__ */

arch/cris/kernel/time.c

@@ -21,7 +21,6 @@
  *
  */
 
-#include <asm/rtc.h>
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/param.h>
@@ -32,7 +31,8 @@
 #include <linux/profile.h>
 #include <linux/sched.h>	/* just for sched_clock() - funny that */
 
-int have_rtc;  /* used to remember if we have an RTC or not */;
+
+#define D(x)
 
 #define TICK_SIZE tick
 
@@ -50,78 +50,16 @@ u32 arch_gettimeoffset(void)
 }
 #endif
 
-/*
- * BUG: This routine does not handle hour overflow properly; it just
- *      sets the minutes. Usually you'll only notice that after reboot!
- */
-
 int set_rtc_mmss(unsigned long nowtime)
 {
-	int retval = 0;
-	int real_seconds, real_minutes, cmos_minutes;
-
-	printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime);
-
-	if(!have_rtc)
-		return 0;
-
-	cmos_minutes = CMOS_READ(RTC_MINUTES);
-	cmos_minutes = bcd2bin(cmos_minutes);
-
-	/*
-	 * since we're only adjusting minutes and seconds,
-	 * don't interfere with hour overflow. This avoids
-	 * messing with unknown time zones but requires your
-	 * RTC not to be off by more than 15 minutes
-	 */
-	real_seconds = nowtime % 60;
-	real_minutes = nowtime / 60;
-	if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
-		real_minutes += 30;		/* correct for half hour time zone */
-	real_minutes %= 60;
-
-	if (abs(real_minutes - cmos_minutes) < 30) {
-		real_seconds = bin2bcd(real_seconds);
-		real_minutes = bin2bcd(real_minutes);
-		CMOS_WRITE(real_seconds,RTC_SECONDS);
-		CMOS_WRITE(real_minutes,RTC_MINUTES);
-	} else {
-		printk_once(KERN_NOTICE
-		       "set_rtc_mmss: can't update from %d to %d\n",
-		       cmos_minutes, real_minutes);
-		retval = -1;
-	}
-
-	return retval;
+	D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
+	return 0;
 }
 
 /* grab the time from the RTC chip */
-
-unsigned long
-get_cmos_time(void)
+unsigned long get_cmos_time(void)
 {
-	unsigned int year, mon, day, hour, min, sec;
-	if(!have_rtc)
-		return 0;
-
-	sec = CMOS_READ(RTC_SECONDS);
-	min = CMOS_READ(RTC_MINUTES);
-	hour = CMOS_READ(RTC_HOURS);
-	day = CMOS_READ(RTC_DAY_OF_MONTH);
-	mon = CMOS_READ(RTC_MONTH);
-	year = CMOS_READ(RTC_YEAR);
-
-	sec = bcd2bin(sec);
-	min = bcd2bin(min);
-	hour = bcd2bin(hour);
-	day = bcd2bin(day);
-	mon = bcd2bin(mon);
-	year = bcd2bin(year);
-
-	if ((year += 1900) < 1970)
-		year += 100;
-
-	return mktime(year, mon, day, hour, min, sec);
+	return 0;
 }
 
 
@@ -132,7 +70,7 @@ int update_persistent_clock(struct timespec now)
 
 void read_persistent_clock(struct timespec *ts)
 {
-	ts->tv_sec = get_cmos_time();
+	ts->tv_sec = 0;
 	ts->tv_nsec = 0;
 }
 

arch/cris/kernel/vmlinux.lds.S

@@ -52,6 +52,7 @@ SECTIONS
 
 	EXCEPTION_TABLE(4)
 
+	_sdata = .;
 	RODATA
 
 	. = ALIGN (4);

arch/cris/mm/fault.c

@@ -58,6 +58,8 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
 	struct vm_area_struct * vma;
 	siginfo_t info;
 	int fault;
+	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
+				((writeaccess & 1) ? FAULT_FLAG_WRITE : 0);
 
 	D(printk(KERN_DEBUG
 		 "Page fault for %lX on %X at %lX, prot %d write %d\n",
@@ -115,6 +117,7 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
 	if (in_atomic() || !mm)
 		goto no_context;
 
+retry:
 	down_read(&mm->mmap_sem);
 	vma = find_vma(mm, address);
 	if (!vma)
@@ -163,7 +166,11 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
 	 * the fault.
 	 */
 
-	fault = handle_mm_fault(mm, vma, address, (writeaccess & 1) ? FAULT_FLAG_WRITE : 0);
+	fault = handle_mm_fault(mm, vma, address, flags);
+
+	if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
+		return;
+
 	if (unlikely(fault & VM_FAULT_ERROR)) {
 		if (fault & VM_FAULT_OOM)
 			goto out_of_memory;
@@ -171,10 +178,24 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
 			goto do_sigbus;
 		BUG();
 	}
-	if (fault & VM_FAULT_MAJOR)
-		tsk->maj_flt++;
-	else
-		tsk->min_flt++;
+
+	if (flags & FAULT_FLAG_ALLOW_RETRY) {
+		if (fault & VM_FAULT_MAJOR)
+			tsk->maj_flt++;
+		else
+			tsk->min_flt++;
+		if (fault & VM_FAULT_RETRY) {
+			flags &= ~FAULT_FLAG_ALLOW_RETRY;
+
+			/*
+			 * No need to up_read(&mm->mmap_sem) as we would
+			 * have already released it in __lock_page_or_retry
+			 * in mm/filemap.c.
+			 */
+
+			goto retry;
+		}
+	}
 
 	up_read(&mm->mmap_sem);
 	return;

drivers/net/cris/eth_v10.c

@@ -1131,7 +1131,6 @@ static irqreturn_t
 e100rxtx_interrupt(int irq, void *dev_id)
 {
 	struct net_device *dev = (struct net_device *)dev_id;
-	struct net_local *np = netdev_priv(dev);
 	unsigned long irqbits;
 
 	/*