From: Huang Ying <ying.huang@intel.com>
Date: Wed, 5 Jan 2011 03:38:09 +0000 (-0500)
Subject: x86, NMI: Add touch_nmi_watchdog to io_check_error delay
X-Git-Tag: firefly_0821_release~7613^2~2648^2~41
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=74d91e3c6a66359bb754fb5d8a5b54fb6ba2f9a6;hp=554ec063982752e9a569ab9189eeffa3d96731b2;p=firefly-linux-kernel-4.4.55.git

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 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);