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Date: Mon, 19 May 2008 14:06:36 +0100
From: Alan Cox <alan@...rguk.ukuu.org.uk>
To: akpm@...l.org, linux-kernel@...r.kernel.org, wim@...ana.be
Subject: [PATCH 20/57] booke watchdog: clean up and unlocked_ioctl
From: Alan Cox <alan@...hat.com>
---
drivers/watchdog/booke_wdt.c | 57 ++++++++++++++++++++++--------------------
1 files changed, 30 insertions(+), 27 deletions(-)
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c
index d362f5b..5d52d35 100644
--- a/drivers/watchdog/booke_wdt.c
+++ b/drivers/watchdog/booke_wdt.c
@@ -19,9 +19,9 @@
#include <linux/miscdevice.h>
#include <linux/notifier.h>
#include <linux/watchdog.h>
+#include <linux/uaccess.h>
#include <asm/reg_booke.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* If the kernel parameter wdt=1, the watchdog will be enabled at boot.
@@ -33,12 +33,12 @@
*/
#ifdef CONFIG_FSL_BOOKE
-#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz , reset=~40sec */
+#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz,reset=~40sec */
#else
#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */
#endif /* for timing information */
-u32 booke_wdt_enabled = 0;
+u32 booke_wdt_enabled;
u32 booke_wdt_period = WDT_PERIOD_DEFAULT;
#ifdef CONFIG_FSL_BOOKE
@@ -50,7 +50,7 @@ u32 booke_wdt_period = WDT_PERIOD_DEFAULT;
/*
* booke_wdt_ping:
*/
-static __inline__ void booke_wdt_ping(void)
+static inline void booke_wdt_ping(void)
{
mtspr(SPRN_TSR, TSR_ENW|TSR_WIS);
}
@@ -58,7 +58,7 @@ static __inline__ void booke_wdt_ping(void)
/*
* booke_wdt_enable:
*/
-static __inline__ void booke_wdt_enable(void)
+static inline void booke_wdt_enable(void)
{
u32 val;
@@ -73,7 +73,7 @@ static __inline__ void booke_wdt_enable(void)
/*
* booke_wdt_write:
*/
-static ssize_t booke_wdt_write (struct file *file, const char __user *buf,
+static ssize_t booke_wdt_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
booke_wdt_ping();
@@ -81,24 +81,23 @@ static ssize_t booke_wdt_write (struct file *file, const char __user *buf,
}
static struct watchdog_info ident = {
- .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
- .firmware_version = 0,
- .identity = "PowerPC Book-E Watchdog",
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+ .firmware_version = 0,
+ .identity = "PowerPC Book-E Watchdog",
};
/*
* booke_wdt_ioctl:
*/
-static int booke_wdt_ioctl (struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long booke_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
u32 tmp = 0;
u32 __user *p = (u32 __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user ((struct watchdog_info __user *) arg, &ident,
- sizeof(struct watchdog_info)))
+ if (copy_to_user(arg, &ident, sizeof(struct watchdog_info)))
return -EFAULT;
case WDIOC_GETSTATUS:
return put_user(ident.options, p);
@@ -113,7 +112,8 @@ static int booke_wdt_ioctl (struct inode *inode, struct file *file,
case WDIOC_SETTIMEOUT:
if (get_user(booke_wdt_period, p))
return -EFAULT;
- mtspr(SPRN_TCR, (mfspr(SPRN_TCR)&~WDTP(0))|WDTP(booke_wdt_period));
+ mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP(0)) |
+ WDTP(booke_wdt_period));
return 0;
case WDIOC_GETTIMEOUT:
return put_user(booke_wdt_period, p);
@@ -135,12 +135,13 @@ static int booke_wdt_ioctl (struct inode *inode, struct file *file,
/*
* booke_wdt_open:
*/
-static int booke_wdt_open (struct inode *inode, struct file *file)
+static int booke_wdt_open(struct inode *inode, struct file *file)
{
if (booke_wdt_enabled == 0) {
booke_wdt_enabled = 1;
booke_wdt_enable();
- printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
+ printk(KERN_INFO
+ "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
booke_wdt_period);
}
@@ -148,17 +149,17 @@ static int booke_wdt_open (struct inode *inode, struct file *file)
}
static const struct file_operations booke_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = booke_wdt_write,
- .ioctl = booke_wdt_ioctl,
- .open = booke_wdt_open,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = booke_wdt_write,
+ .unlocked_ioctl = booke_wdt_ioctl,
+ .open = booke_wdt_open,
};
static struct miscdevice booke_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &booke_wdt_fops,
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &booke_wdt_fops,
};
static void __exit booke_wdt_exit(void)
@@ -173,18 +174,20 @@ static int __init booke_wdt_init(void)
{
int ret = 0;
- printk (KERN_INFO "PowerPC Book-E Watchdog Timer Loaded\n");
+ printk(KERN_INFO "PowerPC Book-E Watchdog Timer Loaded\n");
ident.firmware_version = cur_cpu_spec->pvr_value;
ret = misc_register(&booke_wdt_miscdev);
if (ret) {
- printk (KERN_CRIT "Cannot register miscdev on minor=%d (err=%d)\n",
+ printk(KERN_CRIT
+ "Cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
return ret;
}
if (booke_wdt_enabled == 1) {
- printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
+ printk(KERN_INFO
+ "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
booke_wdt_period);
booke_wdt_enable();
}
--
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