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>

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index bb6f041..c76aaca 100644 (file)
--- 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);