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authorDavid Engraf <david.engraf@sysgo.com>2011-07-20 15:03:39 +0200
committerWim Van Sebroeck <wim@iguana.be>2011-08-02 08:22:49 +0000
commitbea1906620ce72b63f83735c4cc2642b25ec54ae (patch)
treee96e96e0068ea332a4bb8dd3334f4de8c3d2e7f8 /drivers/watchdog/shwdt.c
parentc027a474a68065391c8773f6e83ed5412657e369 (diff)
downloadlwn-bea1906620ce72b63f83735c4cc2642b25ec54ae.tar.gz
lwn-bea1906620ce72b63f83735c4cc2642b25ec54ae.zip
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>
Diffstat (limited to 'drivers/watchdog/shwdt.c')
-rw-r--r--drivers/watchdog/shwdt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/watchdog/shwdt.c b/drivers/watchdog/shwdt.c
index db84f2322d1a..a267dc078daf 100644
--- a/drivers/watchdog/shwdt.c
+++ b/drivers/watchdog/shwdt.c
@@ -64,7 +64,7 @@
* misses its deadline, the kernel timer will allow the WDT to overflow.
*/
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 struct platform_device *sh_wdt_dev;