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path: root/drivers/watchdog/booke_wdt.c
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Diffstat (limited to 'drivers/watchdog/booke_wdt.c')
-rw-r--r--drivers/watchdog/booke_wdt.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c
index c1ba0db48501..4c423d531a89 100644
--- a/drivers/watchdog/booke_wdt.c
+++ b/drivers/watchdog/booke_wdt.c
@@ -18,9 +18,9 @@
18#include <linux/miscdevice.h> 18#include <linux/miscdevice.h>
19#include <linux/notifier.h> 19#include <linux/notifier.h>
20#include <linux/watchdog.h> 20#include <linux/watchdog.h>
21#include <linux/uaccess.h>
21 22
22#include <asm/reg_booke.h> 23#include <asm/reg_booke.h>
23#include <asm/uaccess.h>
24#include <asm/system.h> 24#include <asm/system.h>
25 25
26/* If the kernel parameter wdt=1, the watchdog will be enabled at boot. 26/* If the kernel parameter wdt=1, the watchdog will be enabled at boot.
@@ -32,7 +32,7 @@
32 */ 32 */
33 33
34#ifdef CONFIG_FSL_BOOKE 34#ifdef CONFIG_FSL_BOOKE
35#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz , reset=~40sec */ 35#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz,reset=~40sec */
36#else 36#else
37#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */ 37#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */
38#endif /* for timing information */ 38#endif /* for timing information */
@@ -82,16 +82,15 @@ static struct watchdog_info ident = {
82 .identity = "PowerPC Book-E Watchdog", 82 .identity = "PowerPC Book-E Watchdog",
83}; 83};
84 84
85static int booke_wdt_ioctl(struct inode *inode, struct file *file, 85static long booke_wdt_ioctl(struct file *file,
86 unsigned int cmd, unsigned long arg) 86 unsigned int cmd, unsigned long arg)
87{ 87{
88 u32 tmp = 0; 88 u32 tmp = 0;
89 u32 __user *p = (u32 __user *)arg; 89 u32 __user *p = (u32 __user *)arg;
90 90
91 switch (cmd) { 91 switch (cmd) {
92 case WDIOC_GETSUPPORT: 92 case WDIOC_GETSUPPORT:
93 if (copy_to_user((struct watchdog_info __user *)arg, &ident, 93 if (copy_to_user(arg, &ident, sizeof(struct watchdog_info)))
94 sizeof(struct watchdog_info)))
95 return -EFAULT; 94 return -EFAULT;
96 case WDIOC_GETSTATUS: 95 case WDIOC_GETSTATUS:
97 return put_user(ident.options, p); 96 return put_user(ident.options, p);
@@ -106,7 +105,8 @@ static int booke_wdt_ioctl(struct inode *inode, struct file *file,
106 case WDIOC_SETTIMEOUT: 105 case WDIOC_SETTIMEOUT:
107 if (get_user(booke_wdt_period, p)) 106 if (get_user(booke_wdt_period, p))
108 return -EFAULT; 107 return -EFAULT;
109 mtspr(SPRN_TCR, (mfspr(SPRN_TCR)&~WDTP(0))|WDTP(booke_wdt_period)); 108 mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP(0)) |
109 WDTP(booke_wdt_period));
110 return 0; 110 return 0;
111 case WDIOC_GETTIMEOUT: 111 case WDIOC_GETTIMEOUT:
112 return put_user(booke_wdt_period, p); 112 return put_user(booke_wdt_period, p);
@@ -132,8 +132,9 @@ static int booke_wdt_open(struct inode *inode, struct file *file)
132 if (booke_wdt_enabled == 0) { 132 if (booke_wdt_enabled == 0) {
133 booke_wdt_enabled = 1; 133 booke_wdt_enabled = 1;
134 on_each_cpu(__booke_wdt_enable, NULL, 0, 0); 134 on_each_cpu(__booke_wdt_enable, NULL, 0, 0);
135 printk(KERN_INFO "PowerPC Book-E Watchdog Timer Enabled " 135 printk(KERN_INFO
136 "(wdt_period=%d)\n", booke_wdt_period); 136 "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
137 booke_wdt_period);
137 } 138 }
138 spin_unlock(&booke_wdt_lock); 139 spin_unlock(&booke_wdt_lock);
139 140
@@ -144,7 +145,7 @@ static const struct file_operations booke_wdt_fops = {
144 .owner = THIS_MODULE, 145 .owner = THIS_MODULE,
145 .llseek = no_llseek, 146 .llseek = no_llseek,
146 .write = booke_wdt_write, 147 .write = booke_wdt_write,
147 .ioctl = booke_wdt_ioctl, 148 .unlocked_ioctl = booke_wdt_ioctl,
148 .open = booke_wdt_open, 149 .open = booke_wdt_open,
149}; 150};
150 151
@@ -175,8 +176,9 @@ static int __init booke_wdt_init(void)
175 176
176 spin_lock(&booke_wdt_lock); 177 spin_lock(&booke_wdt_lock);
177 if (booke_wdt_enabled == 1) { 178 if (booke_wdt_enabled == 1) {
178 printk(KERN_INFO "PowerPC Book-E Watchdog Timer Enabled " 179 printk(KERN_INFO
179 "(wdt_period=%d)\n", booke_wdt_period); 180 "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
181 booke_wdt_period);
180 on_each_cpu(__booke_wdt_enable, NULL, 0, 0); 182 on_each_cpu(__booke_wdt_enable, NULL, 0, 0);
181 } 183 }
182 spin_unlock(&booke_wdt_lock); 184 spin_unlock(&booke_wdt_lock);