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-rw-r--r--arch/cris/arch-v10/drivers/ds1302.c515
-rw-r--r--arch/cris/arch-v10/drivers/pcf8563.c380
-rw-r--r--arch/cris/arch-v10/kernel/fasttimer.c2
-rw-r--r--arch/cris/arch-v10/kernel/kgdb.c2
-rw-r--r--arch/cris/arch-v10/kernel/time.c9
-rw-r--r--arch/cris/arch-v10/lib/Makefile3
-rw-r--r--arch/cris/arch-v32/drivers/cryptocop.c6
-rw-r--r--arch/cris/arch-v32/kernel/ptrace.c2
-rw-r--r--arch/cris/arch-v32/kernel/time.c7
-rw-r--r--arch/cris/include/arch-v32/arch/cache.h2
-rw-r--r--arch/cris/include/asm/Kbuild1
-rw-r--r--arch/cris/include/asm/posix_types.h2
-rw-r--r--arch/cris/include/asm/rtc.h107
-rw-r--r--arch/cris/kernel/time.c76
-rw-r--r--arch/cris/kernel/vmlinux.lds.S1
-rw-r--r--arch/cris/mm/fault.c31
16 files changed, 40 insertions, 1106 deletions
diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c
deleted file mode 100644
index 74f99c688c8d..000000000000
--- a/arch/cris/arch-v10/drivers/ds1302.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/*!***************************************************************************
-*!
-*! FILE NAME : ds1302.c
-*!
-*! DESCRIPTION: Implements an interface for the DS1302 RTC through Etrax I/O
-*!
-*! Functions exported: ds1302_readreg, ds1302_writereg, ds1302_init
-*!
-*! ---------------------------------------------------------------------------
-*!
-*! (C) Copyright 1999-2007 Axis Communications AB, LUND, SWEDEN
-*!
-*!***************************************************************************/
-
-
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/miscdevice.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/bcd.h>
-#include <linux/capability.h>
-
-#include <asm/uaccess.h>
-#include <arch/svinto.h>
-#include <asm/io.h>
-#include <asm/rtc.h>
-#include <arch/io_interface_mux.h>
-
-#include "i2c.h"
-
-#define RTC_MAJOR_NR 121 /* local major, change later */
-
-static DEFINE_MUTEX(ds1302_mutex);
-static const char ds1302_name[] = "ds1302";
-
-/* The DS1302 might be connected to different bits on different products.
- * It has three signals - SDA, SCL and RST. RST and SCL are always outputs,
- * but SDA can have a selected direction.
- * For now, only PORT_PB is hardcoded.
- */
-
-/* The RST bit may be on either the Generic Port or Port PB. */
-#ifdef CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT
-#define TK_RST_OUT(x) REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, CONFIG_ETRAX_DS1302_RSTBIT, x)
-#define TK_RST_DIR(x)
-#else
-#define TK_RST_OUT(x) REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_DS1302_RSTBIT, x)
-#define TK_RST_DIR(x) REG_SHADOW_SET(R_PORT_PB_DIR, port_pb_dir_shadow, CONFIG_ETRAX_DS1302_RSTBIT, x)
-#endif
-
-
-#define TK_SDA_OUT(x) REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_DS1302_SDABIT, x)
-#define TK_SCL_OUT(x) REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_DS1302_SCLBIT, x)
-
-#define TK_SDA_IN() ((*R_PORT_PB_READ >> CONFIG_ETRAX_DS1302_SDABIT) & 1)
-/* 1 is out, 0 is in */
-#define TK_SDA_DIR(x) REG_SHADOW_SET(R_PORT_PB_DIR, port_pb_dir_shadow, CONFIG_ETRAX_DS1302_SDABIT, x)
-#define TK_SCL_DIR(x) REG_SHADOW_SET(R_PORT_PB_DIR, port_pb_dir_shadow, CONFIG_ETRAX_DS1302_SCLBIT, x)
-
-
-/*
- * The reason for tempudelay and not udelay is that loops_per_usec
- * (used in udelay) is not set when functions here are called from time.c
- */
-
-static void tempudelay(int usecs)
-{
- volatile int loops;
-
- for(loops = usecs * 12; loops > 0; loops--)
- /* nothing */;
-}
-
-
-/* Send 8 bits. */
-static void
-out_byte(unsigned char x)
-{
- int i;
- TK_SDA_DIR(1);
- for (i = 8; i--;) {
- /* The chip latches incoming bits on the rising edge of SCL. */
- TK_SCL_OUT(0);
- TK_SDA_OUT(x & 1);
- tempudelay(1);
- TK_SCL_OUT(1);
- tempudelay(1);
- x >>= 1;
- }
- TK_SDA_DIR(0);
-}
-
-static unsigned char
-in_byte(void)
-{
- unsigned char x = 0;
- int i;
-
- /* Read byte. Bits come LSB first, on the falling edge of SCL.
- * Assume SDA is in input direction already.
- */
- TK_SDA_DIR(0);
-
- for (i = 8; i--;) {
- TK_SCL_OUT(0);
- tempudelay(1);
- x >>= 1;
- x |= (TK_SDA_IN() << 7);
- TK_SCL_OUT(1);
- tempudelay(1);
- }
-
- return x;
-}
-
-/* Prepares for a transaction by de-activating RST (active-low). */
-
-static void
-start(void)
-{
- TK_SCL_OUT(0);
- tempudelay(1);
- TK_RST_OUT(0);
- tempudelay(5);
- TK_RST_OUT(1);
-}
-
-/* Ends a transaction by taking RST active again. */
-
-static void
-stop(void)
-{
- tempudelay(2);
- TK_RST_OUT(0);
-}
-
-/* Enable writing. */
-
-static void
-ds1302_wenable(void)
-{
- start();
- out_byte(0x8e); /* Write control register */
- out_byte(0x00); /* Disable write protect bit 7 = 0 */
- stop();
-}
-
-/* Disable writing. */
-
-static void
-ds1302_wdisable(void)
-{
- start();
- out_byte(0x8e); /* Write control register */
- out_byte(0x80); /* Disable write protect bit 7 = 0 */
- stop();
-}
-
-
-
-/* Read a byte from the selected register in the DS1302. */
-
-unsigned char
-ds1302_readreg(int reg)
-{
- unsigned char x;
-
- start();
- out_byte(0x81 | (reg << 1)); /* read register */
- x = in_byte();
- stop();
-
- return x;
-}
-
-/* Write a byte to the selected register. */
-
-void
-ds1302_writereg(int reg, unsigned char val)
-{
-#ifndef CONFIG_ETRAX_RTC_READONLY
- int do_writereg = 1;
-#else
- int do_writereg = 0;
-
- if (reg == RTC_TRICKLECHARGER)
- do_writereg = 1;
-#endif
-
- if (do_writereg) {
- ds1302_wenable();
- start();
- out_byte(0x80 | (reg << 1)); /* write register */
- out_byte(val);
- stop();
- ds1302_wdisable();
- }
-}
-
-void
-get_rtc_time(struct rtc_time *rtc_tm)
-{
- unsigned long flags;
-
- local_irq_save(flags);
-
- rtc_tm->tm_sec = CMOS_READ(RTC_SECONDS);
- rtc_tm->tm_min = CMOS_READ(RTC_MINUTES);
- rtc_tm->tm_hour = CMOS_READ(RTC_HOURS);
- rtc_tm->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH);
- rtc_tm->tm_mon = CMOS_READ(RTC_MONTH);
- rtc_tm->tm_year = CMOS_READ(RTC_YEAR);
-
- local_irq_restore(flags);
-
- rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
- rtc_tm->tm_min = bcd2bin(rtc_tm->tm_min);
- rtc_tm->tm_hour = bcd2bin(rtc_tm->tm_hour);
- rtc_tm->tm_mday = bcd2bin(rtc_tm->tm_mday);
- rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
- rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
-
- /*
- * Account for differences between how the RTC uses the values
- * and how they are defined in a struct rtc_time;
- */
-
- if (rtc_tm->tm_year <= 69)
- rtc_tm->tm_year += 100;
-
- rtc_tm->tm_mon--;
-}
-
-static unsigned char days_in_mo[] =
- {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-/* ioctl that supports RTC_RD_TIME and RTC_SET_TIME (read and set time/date). */
-
-static int rtc_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- unsigned long flags;
-
- switch(cmd) {
- case RTC_RD_TIME: /* read the time/date from RTC */
- {
- struct rtc_time rtc_tm;
-
- memset(&rtc_tm, 0, sizeof (struct rtc_time));
- get_rtc_time(&rtc_tm);
- if (copy_to_user((struct rtc_time*)arg, &rtc_tm, sizeof(struct rtc_time)))
- return -EFAULT;
- return 0;
- }
-
- case RTC_SET_TIME: /* set the RTC */
- {
- struct rtc_time rtc_tm;
- unsigned char mon, day, hrs, min, sec, leap_yr;
- unsigned int yrs;
-
- if (!capable(CAP_SYS_TIME))
- return -EPERM;
-
- if (copy_from_user(&rtc_tm, (struct rtc_time*)arg, sizeof(struct rtc_time)))
- return -EFAULT;
-
- yrs = rtc_tm.tm_year + 1900;
- mon = rtc_tm.tm_mon + 1; /* tm_mon starts at zero */
- day = rtc_tm.tm_mday;
- hrs = rtc_tm.tm_hour;
- min = rtc_tm.tm_min;
- sec = rtc_tm.tm_sec;
-
-
- if ((yrs < 1970) || (yrs > 2069))
- return -EINVAL;
-
- leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
-
- if ((mon > 12) || (day == 0))
- return -EINVAL;
-
- if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
- return -EINVAL;
-
- if ((hrs >= 24) || (min >= 60) || (sec >= 60))
- return -EINVAL;
-
- if (yrs >= 2000)
- yrs -= 2000; /* RTC (0, 1, ... 69) */
- else
- yrs -= 1900; /* RTC (70, 71, ... 99) */
-
- sec = bin2bcd(sec);
- min = bin2bcd(min);
- hrs = bin2bcd(hrs);
- day = bin2bcd(day);
- mon = bin2bcd(mon);
- yrs = bin2bcd(yrs);
-
- local_irq_save(flags);
- CMOS_WRITE(yrs, RTC_YEAR);
- CMOS_WRITE(mon, RTC_MONTH);
- CMOS_WRITE(day, RTC_DAY_OF_MONTH);
- CMOS_WRITE(hrs, RTC_HOURS);
- CMOS_WRITE(min, RTC_MINUTES);
- CMOS_WRITE(sec, RTC_SECONDS);
- local_irq_restore(flags);
-
- /* Notice that at this point, the RTC is updated but
- * the kernel is still running with the old time.
- * You need to set that separately with settimeofday
- * or adjtimex.
- */
- return 0;
- }
-
- case RTC_SET_CHARGE: /* set the RTC TRICKLE CHARGE register */
- {
- int tcs_val;
-
- if (!capable(CAP_SYS_TIME))
- return -EPERM;
-
- if(copy_from_user(&tcs_val, (int*)arg, sizeof(int)))
- return -EFAULT;
-
- tcs_val = RTC_TCR_PATTERN | (tcs_val & 0x0F);
- ds1302_writereg(RTC_TRICKLECHARGER, tcs_val);
- return 0;
- }
- case RTC_VL_READ:
- {
- /* TODO:
- * Implement voltage low detection support
- */
- printk(KERN_WARNING "DS1302: RTC Voltage Low detection"
- " is not supported\n");
- return 0;
- }
- case RTC_VL_CLR:
- {
- /* TODO:
- * Nothing to do since Voltage Low detection is not supported
- */
- return 0;
- }
- default:
- return -ENOIOCTLCMD;
- }
-}
-
-static long rtc_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- int ret;
-
- mutex_lock(&ds1302_mutex);
- ret = rtc_ioctl(file, cmd, arg);
- mutex_unlock(&ds1302_mutex);
-
- return ret;
-}
-
-static void
-print_rtc_status(void)
-{
- struct rtc_time tm;
-
- get_rtc_time(&tm);
-
- /*
- * There is no way to tell if the luser has the RTC set for local
- * time or for Universal Standard Time (GMT). Probably local though.
- */
-
- printk(KERN_INFO "rtc_time\t: %02d:%02d:%02d\n",
- tm.tm_hour, tm.tm_min, tm.tm_sec);
- printk(KERN_INFO "rtc_date\t: %04d-%02d-%02d\n",
- tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
-}
-
-/* The various file operations we support. */
-
-static const struct file_operations rtc_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = rtc_unlocked_ioctl,
- .llseek = noop_llseek,
-};
-
-/* Probe for the chip by writing something to its RAM and try reading it back. */
-
-#define MAGIC_PATTERN 0x42
-
-static int __init
-ds1302_probe(void)
-{
- int retval, res;
-
- TK_RST_DIR(1);
- TK_SCL_DIR(1);
- TK_SDA_DIR(0);
-
- /* Try to talk to timekeeper. */
-
- ds1302_wenable();
- start();
- out_byte(0xc0); /* write RAM byte 0 */
- out_byte(MAGIC_PATTERN); /* write something magic */
- start();
- out_byte(0xc1); /* read RAM byte 0 */
-
- if((res = in_byte()) == MAGIC_PATTERN) {
- stop();
- ds1302_wdisable();
- printk(KERN_INFO "%s: RTC found.\n", ds1302_name);
- printk(KERN_INFO "%s: SDA, SCL, RST on PB%i, PB%i, %s%i\n",
- ds1302_name,
- CONFIG_ETRAX_DS1302_SDABIT,
- CONFIG_ETRAX_DS1302_SCLBIT,
-#ifdef CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT
- "GENIO",
-#else
- "PB",
-#endif
- CONFIG_ETRAX_DS1302_RSTBIT);
- print_rtc_status();
- retval = 1;
- } else {
- stop();
- retval = 0;
- }
-
- return retval;
-}
-
-
-/* Just probe for the RTC and register the device to handle the ioctl needed. */
-
-int __init
-ds1302_init(void)
-{
-#ifdef CONFIG_ETRAX_I2C
- i2c_init();
-#endif
-
- if (!ds1302_probe()) {
-#ifdef CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT
-#if CONFIG_ETRAX_DS1302_RSTBIT == 27
- /*
- * The only way to set g27 to output is to enable ATA.
- *
- * Make sure that R_GEN_CONFIG is setup correct.
- */
- /* Allocating the ATA interface will grab almost all
- * pins in I/O groups a, b, c and d. A consequence of
- * allocating the ATA interface is that the fixed
- * interfaces shared RAM, parallel port 0, parallel
- * port 1, parallel port W, SCSI-8 port 0, SCSI-8 port
- * 1, SCSI-W, serial port 2, serial port 3,
- * synchronous serial port 3 and USB port 2 and almost
- * all GPIO pins on port g cannot be used.
- */
- if (cris_request_io_interface(if_ata, "ds1302/ATA")) {
- printk(KERN_WARNING "ds1302: Failed to get IO interface\n");
- return -1;
- }
-
-#elif CONFIG_ETRAX_DS1302_RSTBIT == 0
- if (cris_io_interface_allocate_pins(if_gpio_grp_a,
- 'g',
- CONFIG_ETRAX_DS1302_RSTBIT,
- CONFIG_ETRAX_DS1302_RSTBIT)) {
- printk(KERN_WARNING "ds1302: Failed to get IO interface\n");
- return -1;
- }
-
- /* Set the direction of this bit to out. */
- genconfig_shadow = ((genconfig_shadow &
- ~IO_MASK(R_GEN_CONFIG, g0dir)) |
- (IO_STATE(R_GEN_CONFIG, g0dir, out)));
- *R_GEN_CONFIG = genconfig_shadow;
-#endif
- if (!ds1302_probe()) {
- printk(KERN_WARNING "%s: RTC not found.\n", ds1302_name);
- return -1;
- }
-#else
- printk(KERN_WARNING "%s: RTC not found.\n", ds1302_name);
- return -1;
-#endif
- }
- /* Initialise trickle charger */
- ds1302_writereg(RTC_TRICKLECHARGER,
- RTC_TCR_PATTERN |(CONFIG_ETRAX_DS1302_TRICKLE_CHARGE & 0x0F));
- /* Start clock by resetting CLOCK_HALT */
- ds1302_writereg(RTC_SECONDS, (ds1302_readreg(RTC_SECONDS) & 0x7F));
- return 0;
-}
-
-static int __init ds1302_register(void)
-{
- ds1302_init();
- if (register_chrdev(RTC_MAJOR_NR, ds1302_name, &rtc_fops)) {
- printk(KERN_INFO "%s: unable to get major %d for rtc\n",
- ds1302_name, RTC_MAJOR_NR);
- return -1;
- }
- return 0;
-
-}
-
-module_init(ds1302_register);
diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c
deleted file mode 100644
index 9da056860c92..000000000000
--- a/arch/cris/arch-v10/drivers/pcf8563.c
+++ /dev/null
@@ -1,380 +0,0 @@
-/*
- * 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);
diff --git a/arch/cris/arch-v10/kernel/fasttimer.c b/arch/cris/arch-v10/kernel/fasttimer.c
index 8a8196ee8ce8..082f1890bacb 100644
--- a/arch/cris/arch-v10/kernel/fasttimer.c
+++ b/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>
diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch-v10/kernel/kgdb.c
index b579dd02e098..37e6d2c50b76 100644
--- a/arch/cris/arch-v10/kernel/kgdb.c
+++ b/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. */
diff --git a/arch/cris/arch-v10/kernel/time.c b/arch/cris/arch-v10/kernel/time.c
index 20c85b5dc7d0..bcffcb6a9415 100644
--- a/arch/cris/arch-v10/kernel/time.c
+++ b/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
diff --git a/arch/cris/arch-v10/lib/Makefile b/arch/cris/arch-v10/lib/Makefile
index 36e9a9c5239b..725153edb764 100644
--- a/arch/cris/arch-v10/lib/Makefile
+++ b/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
diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c
index 642c6fed43d7..f8476d9e856b 100644
--- a/arch/cris/arch-v32/drivers/cryptocop.c
+++ b/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));
diff --git a/arch/cris/arch-v32/kernel/ptrace.c b/arch/cris/arch-v32/kernel/ptrace.c
index f7ad9e8637df..f085229cf870 100644
--- a/arch/cris/arch-v32/kernel/ptrace.c
+++ b/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);
diff --git a/arch/cris/arch-v32/kernel/time.c b/arch/cris/arch-v32/kernel/time.c
index 6773fc83a670..8c4b45efd7b6 100644
--- a/arch/cris/arch-v32/kernel/time.c
+++ b/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();
diff --git a/arch/cris/include/arch-v32/arch/cache.h b/arch/cris/include/arch-v32/arch/cache.h
index 1de779f4f240..7caf25d58e6b 100644
--- a/arch/cris/include/arch-v32/arch/cache.h
+++ b/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);
diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild
index 956eea246b97..04d02a51c5e9 100644
--- a/arch/cris/include/asm/Kbuild
+++ b/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
diff --git a/arch/cris/include/asm/posix_types.h b/arch/cris/include/asm/posix_types.h
index 72b3cd6eda0b..234891c74e2b 100644
--- a/arch/cris/include/asm/posix_types.h
+++ b/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 */
diff --git a/arch/cris/include/asm/rtc.h b/arch/cris/include/asm/rtc.h
deleted file mode 100644
index 17d3019529e1..000000000000
--- a/arch/cris/include/asm/rtc.h
+++ /dev/null
@@ -1,107 +0,0 @@
-
-#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__ */
diff --git a/arch/cris/kernel/time.c b/arch/cris/kernel/time.c
index 4e73092e85c0..277ffc459e4b 100644
--- a/arch/cris/kernel/time.c
+++ b/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;
}
diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S
index a6990cb0f098..a68b983dcea1 100644
--- a/arch/cris/kernel/vmlinux.lds.S
+++ b/arch/cris/kernel/vmlinux.lds.S
@@ -52,6 +52,7 @@ SECTIONS
EXCEPTION_TABLE(4)
+ _sdata = .;
RODATA
. = ALIGN (4);
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c
index b4760d86e1bb..45fd542cf173 100644
--- a/arch/cris/mm/fault.c
+++ b/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;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 22:00:05 +0000