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| author | Denis Turischev <denis@compulab.co.il> | 2010-04-22 19:54:20 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2010-04-26 18:22:30 +0000 |
| commit | 322af98c56c70b3ec6f637fb07d41a9591a6ff9a (patch) | |
| tree | 45ad10b5731f76fffc6cc7c94af254340ff29409 /drivers | |
| parent | fcf1dd7e68ceb6420478c8d89d35b4745d0b2f42 (diff) | |
| download | lwn-322af98c56c70b3ec6f637fb07d41a9591a6ff9a.tar.gz lwn-322af98c56c70b3ec6f637fb07d41a9591a6ff9a.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/watchdog/sbc_fitpc2_wdt.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/watchdog/sbc_fitpc2_wdt.c b/drivers/watchdog/sbc_fitpc2_wdt.c index 2e44dd4e7c1b..c7d67e9a7465 100644 --- a/drivers/watchdog/sbc_fitpc2_wdt.c +++ b/drivers/watchdog/sbc_fitpc2_wdt.c @@ -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) |