From: Doe, YiCheng <yicheng.doe@hp.com>
Date: Thu, 10 Mar 2011 20:00:21 +0000 (-0600)
Subject: ipmi: Fix IPMI errors due to timing problems
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4c418ba9695a24917a1fcfa48f7db3fd76337eb7;p=linux-beck.git

ipmi: Fix IPMI errors due to timing problems

This patch fixes an issue in OpenIPMI module where sometimes an ABORT command
is sent after sending an IPMI request to BMC causing the IPMI request to fail.

Signed-off-by: YiCheng Doe <yicheng.doe@hp.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Tom Mingarelli <thomas.mingarelli@hp.com>
Tested-by: Andy Cress <andy.cress@us.kontron.com>
Tested-by: Mika Lansirine <Mika.Lansirinne@stonesoft.com>
Tested-by: Brian De Wolf <bldewolf@csupomona.edu>
Cc: Jean Michel Audet <Jean-Michel.Audet@ca.Kontron.com>
Cc: Jozef Sudelsky <jozef.sudolsky@elbiahosting.sk>
Acked-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 7855f9f45b8e..62787e30d508 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -900,6 +900,14 @@ static void sender(void                *send_info,
 	printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec);
 #endif
 
+	/*
+	 * last_timeout_jiffies is updated here to avoid
+	 * smi_timeout() handler passing very large time_diff
+	 * value to smi_event_handler() that causes
+	 * the send command to abort.
+	 */
+	smi_info->last_timeout_jiffies = jiffies;
+
 	mod_timer(&smi_info->si_timer, jiffies + SI_TIMEOUT_JIFFIES);
 
 	if (smi_info->thread)