[PATCH] shwdt: fix usage of mod_timer

From: David Engraf
Date: Wed Jul 20 2011 - 09:11:58 EST

This patch fixes the usage of mod_timer and makes 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@xxxxxxxxx>

diff --git a/drivers/watchdog/shwdt.c b/drivers/watchdog/shwdt.c
index db84f23..a267dc0 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;