[WATCHDOG] pnx4008: add cpu_relax()

Added cpu_relax as suggested by Alan Cox.

Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/char/watchdog/pnx4008_wdt.c b/drivers/char/watchdog/pnx4008_wdt.c
index 359168e63c1d..e7f0450a939d 100644
--- a/drivers/char/watchdog/pnx4008_wdt.c
+++ b/drivers/char/watchdog/pnx4008_wdt.c
@@ -104,7 +104,8 @@ static void wdt_enable(void)
         /* stop counter, initiate counter reset */
         __raw_writel(RESET_COUNT, WDTIM_CTRL(wdt_base));
         /*wait for reset to complete. 100% guarantee event */
-        while (__raw_readl(WDTIM_COUNTER(wdt_base)));
+        while (__raw_readl(WDTIM_COUNTER(wdt_base)))
+                cpu_relax();
         /* internal and external reset, stop after that */
         __raw_writel(M_RES2 | STOP_COUNT0 | RESET_COUNT0,
                 WDTIM_MCTRL(wdt_base));