x86, NMI: Add touch_nmi_watchdog to io_check_error delay

Prevent the long delay in io_check_error making NMI watchdog
timeout.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
LKML-Reference: <1294198689-15447-3-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index bb6f04167361..c76aaca5694d 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -351,9 +351,11 @@ io_check_error(unsigned char reason, struct pt_regs *regs)
         reason = (reason & 0xf) | 8;
         outb(reason, 0x61);
 
-        i = 2000;
-        while (--i)
-                udelay(1000);
+        i = 20000;
+        while (--i) {
+                touch_nmi_watchdog();
+                udelay(100);
+        }
 
         reason &= ~8;
         outb(reason, 0x61);