[PATCH] shwdt: fix usage of mod_timer

[David Engraf]

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;