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x86, NMI: Add touch_nmi_watchdog to io_check_error delay

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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>
This commit is contained in:
Huang Ying 2011-01-04 22:38:09 -05:00 committed by Ingo Molnar
parent 554ec06398
commit 74d91e3c6a
1 changed files with 5 additions and 3 deletions
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8
arch/x86/kernel/traps.c
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@ -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);