From: Andrew Morton <akpm@osdl.org>
Date: Thu, 9 Nov 2006 03:56:26 +0000 (-0800)
Subject: [SCSI] ips: fix soft lockup during reset initialization
X-Git-Tag: v2.6.20-rc1~34^2~20^2~41^2~58
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=297295ae6653af1356dd35a8edc411e2715aec57;p=linux-2.6

[SCSI] ips: fix soft lockup during reset initialization

  Resetting the adapter causes the ServeRAID driver to exceed the max time
  allowed by the softlock watchdog.  Resetting the hardware can easily require
  30 or more seconds.  To avoid the

	"BUG: soft lockup detected on CPU#0!"

  result, this patch adds a touch_nmi_watchdog() to the driver's MDELAY macro.

Cc: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Acked-by: Jack Hammer <jack_hammer@adaptec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
---

diff --git a/drivers/scsi/ips.h b/drivers/scsi/ips.h
index 34680f3dd4..b726dcc424 100644
--- a/drivers/scsi/ips.h
+++ b/drivers/scsi/ips.h
@@ -51,6 +51,7 @@
    #define _IPS_H_
 
 #include <linux/version.h>
+#include <linux/nmi.h>
    #include <asm/uaccess.h>
    #include <asm/io.h>
 
@@ -116,9 +117,11 @@
             dev_printk(level , &((pcidev)->dev) , format , ## arg)
    #endif
 
-   #ifndef MDELAY
-      #define MDELAY mdelay
-   #endif
+   #define MDELAY(n)			\
+	do {				\
+		mdelay(n);		\
+		touch_nmi_watchdog();	\
+	} while (0)
 
    #ifndef min
       #define min(x,y) ((x) < (y) ? x : y)