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watchdog: shwdt: fix usage of mod_timer 

Fix the usage of mod_timer() and make the driver usable. mod_timer() must
be called with an absolute timeout in jiffies. The old implementation
used a relative timeout thus the hardware watchdog was never triggered.

Signed-off-by: David Engraf <david.engraf@sysgo.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Wim Van sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: stable <stable@kernel.org>
This commit is contained in:
David Engraf 2011-07-20 15:03:39 +02:00 committed by Wim Van Sebroeck
parent c027a474a6
commit bea1906620
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/shwdt.c
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@ -64,7 +64,7 @@
* misses its deadline, the kernel timer will allow the WDT to overflow. * misses its deadline, the kernel timer will allow the WDT to overflow.
*/ */
static int clock_division_ratio = WTCSR_CKS_4096; static int clock_division_ratio = WTCSR_CKS_4096;
#define next_ping_period(cks) msecs_to_jiffies(cks - 4) #define next_ping_period(cks) (jiffies + msecs_to_jiffies(cks - 4))
static const struct watchdog_info sh_wdt_info; static const struct watchdog_info sh_wdt_info;
static struct platform_device *sh_wdt_dev; static struct platform_device *sh_wdt_dev;