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path: root/drivers/watchdog/sbc_fitpc2_wdt.c
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Diffstat (limited to 'drivers/watchdog/sbc_fitpc2_wdt.c')
-rw-r--r--drivers/watchdog/sbc_fitpc2_wdt.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/watchdog/sbc_fitpc2_wdt.c b/drivers/watchdog/sbc_fitpc2_wdt.c
index 8d44c9b6fb5b..c7d67e9a7465 100644
--- a/drivers/watchdog/sbc_fitpc2_wdt.c
+++ b/drivers/watchdog/sbc_fitpc2_wdt.c
@@ -30,7 +30,7 @@
30static int nowayout = WATCHDOG_NOWAYOUT; 30static int nowayout = WATCHDOG_NOWAYOUT;
31static unsigned int margin = 60; /* (secs) Default is 1 minute */ 31static unsigned int margin = 60; /* (secs) Default is 1 minute */
32static unsigned long wdt_status; 32static unsigned long wdt_status;
33static DEFINE_SPINLOCK(wdt_lock); 33static DEFINE_MUTEX(wdt_lock);
34 34
35#define WDT_IN_USE 0 35#define WDT_IN_USE 0
36#define WDT_OK_TO_CLOSE 1 36#define WDT_OK_TO_CLOSE 1
@@ -45,26 +45,26 @@ static DEFINE_SPINLOCK(wdt_lock);
45 45
46static void wdt_send_data(unsigned char command, unsigned char data) 46static void wdt_send_data(unsigned char command, unsigned char data)
47{ 47{
48 outb(command, COMMAND_PORT);
49 msleep(100);
50 outb(data, DATA_PORT); 48 outb(data, DATA_PORT);
51 msleep(200); 49 msleep(200);
50 outb(command, COMMAND_PORT);
51 msleep(100);
52} 52}
53 53
54static void wdt_enable(void) 54static void wdt_enable(void)
55{ 55{
56 spin_lock(&wdt_lock); 56 mutex_lock(&wdt_lock);
57 wdt_send_data(IFACE_ON_COMMAND, 1); 57 wdt_send_data(IFACE_ON_COMMAND, 1);
58 wdt_send_data(REBOOT_COMMAND, margin); 58 wdt_send_data(REBOOT_COMMAND, margin);
59 spin_unlock(&wdt_lock); 59 mutex_unlock(&wdt_lock);
60} 60}
61 61
62static void wdt_disable(void) 62static void wdt_disable(void)
63{ 63{
64 spin_lock(&wdt_lock); 64 mutex_lock(&wdt_lock);
65 wdt_send_data(IFACE_ON_COMMAND, 0); 65 wdt_send_data(IFACE_ON_COMMAND, 0);
66 wdt_send_data(REBOOT_COMMAND, 0); 66 wdt_send_data(REBOOT_COMMAND, 0);
67 spin_unlock(&wdt_lock); 67 mutex_unlock(&wdt_lock);
68} 68}
69 69
70static int fitpc2_wdt_open(struct inode *inode, struct file *file) 70static int fitpc2_wdt_open(struct inode *inode, struct file *file)