[PATCH] Fix IXP4xx watchdog errata workaround
The IXP4xx driver bails out on all A0 CPUs, but it should only do
so on IXP42x as IXP46x has functioning HW.
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/watchdog/ixp4xx_wdt.c b/drivers/char/watchdog/ixp4xx_wdt.c
index b5be8b1..3800835 100644
--- a/drivers/char/watchdog/ixp4xx_wdt.c
+++ b/drivers/char/watchdog/ixp4xx_wdt.c
@@ -186,8 +186,8 @@
unsigned long processor_id;
asm("mrc p15, 0, %0, cr0, cr0, 0;" : "=r"(processor_id) :);
- if (!(processor_id & 0xf)) {
- printk("IXP4XXX Watchdog: Rev. A0 CPU detected - "
+ if (!(processor_id & 0xf) && !cpu_is_ixp46x()) {
+ printk("IXP4XXX Watchdog: Rev. A0 IXP42x CPU detected - "
"watchdog disabled\n");
return -ENODEV;
