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watchdog: sbc_fitpc2_wdt: fixed "scheduling while atomic" bug. 

spinlock need to be replaced by mutex because of sleep functions
inside wdt_send_data.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Denis Turischev 2010-04-22 19:54:20 +03:00 committed by Wim Van Sebroeck
parent fcf1dd7e68
commit 322af98c56
1 changed files with 5 additions and 5 deletions
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10
drivers/watchdog/sbc_fitpc2_wdt.c
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@ -30,7 +30,7 @@
static int nowayout = WATCHDOG_NOWAYOUT;
static unsigned int margin = 60; /* (secs) Default is 1 minute */
static unsigned long wdt_status;
static DEFINE_SPINLOCK(wdt_lock);
static DEFINE_MUTEX(wdt_lock);
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
@ -53,18 +53,18 @@ static void wdt_send_data(unsigned char command, unsigned char data)
static void wdt_enable(void)
{
spin_lock(&wdt_lock);
mutex_lock(&wdt_lock);
wdt_send_data(IFACE_ON_COMMAND, 1);
wdt_send_data(REBOOT_COMMAND, margin);
spin_unlock(&wdt_lock);
mutex_unlock(&wdt_lock);
}
static void wdt_disable(void)
{
spin_lock(&wdt_lock);
mutex_lock(&wdt_lock);
wdt_send_data(IFACE_ON_COMMAND, 0);
wdt_send_data(REBOOT_COMMAND, 0);
spin_unlock(&wdt_lock);
mutex_unlock(&wdt_lock);
}
static int fitpc2_wdt_open(struct inode *inode, struct file *file)