The patch titled watchdog: ks8695_wdt: clean up, coding style, unlocked_ioctl has been added to the -mm tree. Its filename is watchdog-ks8695_wdt-clean-up-coding-style-unlocked_ioctl.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: watchdog: ks8695_wdt: clean up, coding style, unlocked_ioctl From: Alan Cox <alan@xxxxxxxxxx> Signed-off-by: Alan Cox <alan@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/watchdog/ks8695_wdt.c | 119 ++++++++++++++++---------------- 1 file changed, 62 insertions(+), 57 deletions(-) diff -puN drivers/watchdog/ks8695_wdt.c~watchdog-ks8695_wdt-clean-up-coding-style-unlocked_ioctl drivers/watchdog/ks8695_wdt.c --- a/drivers/watchdog/ks8695_wdt.c~watchdog-ks8695_wdt-clean-up-coding-style-unlocked_ioctl +++ a/drivers/watchdog/ks8695_wdt.c @@ -19,8 +19,8 @@ #include <linux/platform_device.h> #include <linux/types.h> #include <linux/watchdog.h> -#include <asm/io.h> -#include <asm/uaccess.h> +#include <linux/io.h> +#include <linux/uaccess.h> #include <asm/arch/regs-timer.h> @@ -31,38 +31,44 @@ static int wdt_time = WDT_DEFAULT_TIME; static int nowayout = WATCHDOG_NOWAYOUT; module_param(wdt_time, int, 0); -MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="__MODULE_STRING(WDT_DEFAULT_TIME) ")"); +MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default=" + __MODULE_STRING(WDT_DEFAULT_TIME) ")"); #ifdef CONFIG_WATCHDOG_NOWAYOUT module_param(nowayout, int, 0); -MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); +MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" + __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); #endif static unsigned long ks8695wdt_busy; +static spinlock_t ks8695_lock; /* ......................................................................... */ /* * Disable the watchdog. */ -static void inline ks8695_wdt_stop(void) +static inline void ks8695_wdt_stop(void) { unsigned long tmcon; + spin_lock(&ks8695_lock); /* disable timer0 */ tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); __raw_writel(tmcon & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); + spin_unlock(&ks8695_lock); } /* * Enable and reset the watchdog. */ -static void inline ks8695_wdt_start(void) +static inline void ks8695_wdt_start(void) { unsigned long tmcon; unsigned long tval = wdt_time * CLOCK_TICK_RATE; + spin_lock(&ks8695_lock); /* disable timer0 */ tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); __raw_writel(tmcon & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); @@ -73,19 +79,22 @@ static void inline ks8695_wdt_start(void /* re-enable timer0 */ tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); __raw_writel(tmcon | TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); + spin_unlock(&ks8695_lock); } /* * Reload the watchdog timer. (ie, pat the watchdog) */ -static void inline ks8695_wdt_reload(void) +static inline void ks8695_wdt_reload(void) { unsigned long tmcon; + spin_lock(&ks8695_lock); /* disable, then re-enable timer0 */ tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); __raw_writel(tmcon & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); __raw_writel(tmcon | TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON); + spin_unlock(&ks8695_lock); } /* @@ -102,7 +111,8 @@ static int ks8695_wdt_settimeout(int new if ((new_time <= 0) || (new_time > WDT_MAX_TIME)) return -EINVAL; - /* Set new watchdog time. It will be used when ks8695_wdt_start() is called. */ + /* Set new watchdog time. It will be used when + ks8695_wdt_start() is called. */ wdt_time = new_time; return 0; } @@ -128,9 +138,9 @@ static int ks8695_wdt_open(struct inode */ static int ks8695_wdt_close(struct inode *inode, struct file *file) { + /* Disable the watchdog when file is closed */ if (!nowayout) - ks8695_wdt_stop(); /* Disable the watchdog when file is closed */ - + ks8695_wdt_stop(); clear_bit(0, &ks8695wdt_busy); return 0; } @@ -143,60 +153,52 @@ static struct watchdog_info ks8695_wdt_i /* * Handle commands from user-space. */ -static int ks8695_wdt_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static long ks8695_wdt_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) { void __user *argp = (void __user *)arg; int __user *p = argp; int new_value; - switch(cmd) { - case WDIOC_KEEPALIVE: - ks8695_wdt_reload(); /* pat the watchdog */ - return 0; - - case WDIOC_GETSUPPORT: - return copy_to_user(argp, &ks8695_wdt_info, sizeof(ks8695_wdt_info)) ? -EFAULT : 0; - - case WDIOC_SETTIMEOUT: - if (get_user(new_value, p)) - return -EFAULT; - - if (ks8695_wdt_settimeout(new_value)) - return -EINVAL; - - /* Enable new time value */ + switch (cmd) { + case WDIOC_KEEPALIVE: + ks8695_wdt_reload(); /* pat the watchdog */ + return 0; + case WDIOC_GETSUPPORT: + return copy_to_user(argp, &ks8695_wdt_info, + sizeof(ks8695_wdt_info)) ? -EFAULT : 0; + case WDIOC_SETTIMEOUT: + if (get_user(new_value, p)) + return -EFAULT; + if (ks8695_wdt_settimeout(new_value)) + return -EINVAL; + /* Enable new time value */ + ks8695_wdt_start(); + /* Return current value */ + return put_user(wdt_time, p); + case WDIOC_GETTIMEOUT: + return put_user(wdt_time, p); + case WDIOC_GETSTATUS: + case WDIOC_GETBOOTSTATUS: + return put_user(0, p); + case WDIOC_SETOPTIONS: + if (get_user(new_value, p)) + return -EFAULT; + if (new_value & WDIOS_DISABLECARD) + ks8695_wdt_stop(); + if (new_value & WDIOS_ENABLECARD) ks8695_wdt_start(); - - /* Return current value */ - return put_user(wdt_time, p); - - case WDIOC_GETTIMEOUT: - return put_user(wdt_time, p); - - case WDIOC_GETSTATUS: - case WDIOC_GETBOOTSTATUS: - return put_user(0, p); - - case WDIOC_SETOPTIONS: - if (get_user(new_value, p)) - return -EFAULT; - - if (new_value & WDIOS_DISABLECARD) - ks8695_wdt_stop(); - if (new_value & WDIOS_ENABLECARD) - ks8695_wdt_start(); - return 0; - - default: - return -ENOTTY; + return 0; + default: + return -ENOTTY; } } /* * Pat the watchdog whenever device is written to. */ -static ssize_t ks8695_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos) +static ssize_t ks8695_wdt_write(struct file *file, const char *data, + size_t len, loff_t *ppos) { ks8695_wdt_reload(); /* pat the watchdog */ return len; @@ -207,7 +209,7 @@ static ssize_t ks8695_wdt_write(struct f static const struct file_operations ks8695wdt_fops = { .owner = THIS_MODULE, .llseek = no_llseek, - .ioctl = ks8695_wdt_ioctl, + .unlocked_ioctl = ks8695_wdt_ioctl, .open = ks8695_wdt_open, .release = ks8695_wdt_close, .write = ks8695_wdt_write, @@ -231,7 +233,8 @@ static int __init ks8695wdt_probe(struct if (res) return res; - printk("KS8695 Watchdog Timer enabled (%d seconds%s)\n", wdt_time, nowayout ? ", nowayout" : ""); + printk(KERN_INFO "KS8695 Watchdog Timer enabled (%d seconds%s)\n", + wdt_time, nowayout ? ", nowayout" : ""); return 0; } @@ -285,12 +288,14 @@ static struct platform_driver ks8695wdt_ static int __init ks8695_wdt_init(void) { - /* Check that the heartbeat value is within range; if not reset to the default */ + spin_lock_init(&ks8695_lock); + /* Check that the heartbeat value is within range; + if not reset to the default */ if (ks8695_wdt_settimeout(wdt_time)) { ks8695_wdt_settimeout(WDT_DEFAULT_TIME); - pr_info("ks8695_wdt: wdt_time value must be 1 <= wdt_time <= %i, using %d\n", wdt_time, WDT_MAX_TIME); + pr_info("ks8695_wdt: wdt_time value must be 1 <= wdt_time <= %i, using %d\n", + wdt_time, WDT_MAX_TIME); } - return platform_driver_register(&ks8695wdt_driver); } _ Patches currently in -mm which might be from alan@xxxxxxxxxx are linux-next.patch 8390-split-8390-support-into-a-pausing-and-a-non-pausing-driver-core.patch watchdog-clean-acquirewdt-and-check-for-bkl-dependancies.patch watchdog-clean-up-and-check-advantech-watchdog.patch watchdog-ali-watchdog-locking-and-style.patch watchdog-ar7-watchdog.patch watchdog-atp-watchdog.patch watchdog-at91-watchdog-to-unlocked_ioctl.patch watchdog-cpu5_wdt-switch-to-unlocked_ioctl.patch watchdog-davinci_wdt-unlocked_ioctl-and-check-locking.patch watchdog-ep93xx_wdt-unlocked_ioctl.patch watchdog-eurotechwdt-unlocked_ioctl-code-lock-check-and-tidy.patch watchdog-hpwdt-couple-of-include-cleanups.patch watchdog-ib700wdt-clean-up-and-switch-to-unlocked_ioctl.patch watchdog-i6300esb-style-unlocked_ioctl-cleanup.patch watchdog-ibmasr-coding-style-locking-verify.patch watchdog-indydog-clean-up-and-tidy.patch watchdog-iop-watchdog-switch-to-unlocked_ioctl.patch watchdog-it8712f-unlocked_ioctl.patch watchdog-bfin-watchdog-cleanup-and-unlocked_ioctl.patch watchdog-ixp2000_wdt-clean-up-and-unlocked_ioctl.patch watchdog-ixp4xx_wdt-unlocked_ioctl.patch watchdog-ks8695_wdt-clean-up-coding-style-unlocked_ioctl.patch watchdog-machzwd-clean-up-coding-style-unlocked_ioctl.patch watchdog-mixcomwd-coding-style-locking-unlocked_ioctl.patch watchdog-mpc-watchdog-clean-up-and-locking.patch watchdog-mpcore-watchdog-unlocked_ioctl-and-bkl-work.patch watchdog-mtx-1_wdt-clean-up-coding-style-unlocked-ioctl.patch watchdog-mv64x60_wdt-clean-up-and-locking-checks.patch watchdog-omap_wdt-locking-unlocked_ioctl-tidy.patch watchdog-pc87413_wdt-clean-up-coding-style-unlocked_ioctl.patch watchdog-pcwd-clean-up-unlocked_ioctl-usage.patch watchdog-pnx4008_wdt-unlocked_ioctl-setup.patch watchdog-rm9k_wdt-clean-up.patch watchdog-s3c2410-watchdog-cleanup-and-switch-to-unlocked_ioctl.patch watchdog-sa1100_wdt-switch-to-unlocked_ioctl.patch watchdog-sbc60xxwdt-clean-up-and-switch-to-unlocked_ioctl.patch watchdog-stg7240_wdt-unlocked_ioctl.patch watchdog-sbc8360-clean-up.patch watchdog-sbc_epx_c3_wdt-switch-to-unlocked_ioctl.patch watchdog-sb_wdog-clean-up-and-switch-to-unlocked_ioctl.patch watchdog-sc1200_wdt-clean-up-fix-locking-and-use-unlocked_ioctl.patch watchdog-sc520_wdt-clean-up-and-switch-to-unlocked_ioctl.patch watchdog-scx200_wdt-clean-up-and-switch-to-unlocked_ioctl.patch watchdog-shwdt-coding-style-cleanup-switch-to-unlocked_ioctl.patch watchdog-smsc37b787_wdt-coding-style-switch-to-unlocked_ioctl.patch watchdog-softdog-clean-up-coding-style-and-switch-to-unlocked_ioctl.patch watchdog-txx9-fix-locking-switch-to-unlocked_ioctl.patch watchdog-w83627hf-coding-style-clean-up-and-switch-to-unlocked_ioctl.patch watchdog-w83877f_wdt-clean-up-code-coding-style-switch-to-unlocked_ioctl.patch watchdog-w83977f_wdt-clean-up-coding-style-and-switch-to-unlocked_ioctl.patch watchdog-wafer5823wdt-clean-up-coding-style-switch-to-unlocked_ioctl.patch watchdog-wdrtas-clean-up-coding-style-switch-to-unlocked_ioctl.patch watchdog-wdt285-switch-to-unlocked_ioctl-and-tidy-up-oddments-of-coding-style.patch watchdog-wdt977-clean-up-coding-style-and-switch-to-unlocked_ioctl.patch watchdog-wdt501-pci-clean-up-coding-style-and-switch-to-unlocked_ioctl.patch mm-fix-atomic_t-overflow-in-vm.patch serial-8250_gscc-add-module_license.patch remove-is_tty.patch riscom8-remove-redundant-null-pointer-test.patch unexport-proc_clear_tty.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html