From a9b27dbc8e7ab3130feeda93c86d907a19ddc6b1 Mon Sep 17 00:00:00 2001
From: Mark Haverkamp <markh@osdl.org>
Date: Tue, 20 Sep 2005 12:56:50 -0700
Subject: [PATCH] --- yaml --- r: 9559 b: refs/heads/master c:
 9203344cb8ecc554a1d36eae6661235ed422cf59 h: refs/heads/master i:   9557:
 edc5d4203763364a045bb2fe4d56e29f77d2f060   9555:
 1ba315832c9d3ec2ca99d2552067ed539f0bb27d   9551:
 a313cf75b5927c7e815b92ff019aaf9cfa2eaece v: v3

---
 [refs]                                |  2 +-
 trunk/drivers/scsi/aacraid/aachba.c   |  2 +-
 trunk/drivers/scsi/aacraid/comminit.c |  2 +-
 trunk/drivers/scsi/aacraid/commsup.c  | 30 ++++++++++++++++++++++++++-
 4 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index 93554d7de31d..3a15034553df 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 08efb7b6116927c8b6e0af5064448e3aa13300e6
+refs/heads/master: 9203344cb8ecc554a1d36eae6661235ed422cf59
diff --git a/trunk/drivers/scsi/aacraid/aachba.c b/trunk/drivers/scsi/aacraid/aachba.c
index 85d133c40bd3..a0735a247e5b 100644
--- a/trunk/drivers/scsi/aacraid/aachba.c
+++ b/trunk/drivers/scsi/aacraid/aachba.c
@@ -692,7 +692,7 @@ int aac_get_adapter_info(struct aac_dev* dev)
 			 fibptr, 
 			 sizeof(*info),
 			 FsaNormal, 
-			 1, 1, 
+			 -1, 1, /* First `interrupt' command uses special wait */
 			 NULL, 
 			 NULL);
 
diff --git a/trunk/drivers/scsi/aacraid/comminit.c b/trunk/drivers/scsi/aacraid/comminit.c
index 7f11c8540ead..9e054a509b41 100644
--- a/trunk/drivers/scsi/aacraid/comminit.c
+++ b/trunk/drivers/scsi/aacraid/comminit.c
@@ -195,7 +195,7 @@ int aac_send_shutdown(struct aac_dev * dev)
 			  fibctx,
 			  sizeof(struct aac_close),
 			  FsaNormal,
-			  1, 1,
+			  -2 /* Timeout silently */, 1,
 			  NULL, NULL);
 
 	if (status == 0)
diff --git a/trunk/drivers/scsi/aacraid/commsup.c b/trunk/drivers/scsi/aacraid/commsup.c
index 69985b08a270..3b983f3ed960 100644
--- a/trunk/drivers/scsi/aacraid/commsup.c
+++ b/trunk/drivers/scsi/aacraid/commsup.c
@@ -41,6 +41,7 @@
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_device.h>
 #include <asm/semaphore.h>
+#include <asm/delay.h>
 
 #include "aacraid.h"
 
@@ -541,7 +542,34 @@ int fib_send(u16 command, struct fib * fibptr, unsigned long size,  int priority
     
 	if (wait) {
 		spin_unlock_irqrestore(&fibptr->event_lock, flags);
-		down(&fibptr->event_wait);
+		/* Only set for first known interruptable command */
+		if (wait < 0) {
+			/*
+			 * *VERY* Dangerous to time out a command, the
+			 * assumption is made that we have no hope of
+			 * functioning because an interrupt routing or other
+			 * hardware failure has occurred.
+			 */
+			unsigned long count = 36000000L; /* 3 minutes */
+			unsigned long qflags;
+			while (down_trylock(&fibptr->event_wait)) {
+				if (--count == 0) {
+					spin_lock_irqsave(q->lock, qflags);
+					q->numpending--;
+					list_del(&fibptr->queue);
+					spin_unlock_irqrestore(q->lock, qflags);
+					if (wait == -1) {
+	        				printk(KERN_ERR "aacraid: fib_send: first asynchronous command timed out.\n"
+						  "Usually a result of a PCI interrupt routing problem;\n"
+						  "update mother board BIOS or consider utilizing one of\n"
+						  "the SAFE mode kernel options (acpi, apic etc)\n");
+					}
+					return -ETIMEDOUT;
+				}
+				udelay(5);
+			}
+		} else
+			down(&fibptr->event_wait);
 		if(fibptr->done == 0)
 			BUG();