This is a note to let you know that I've just added the patch titled
SCSI: hpsa: fix handling of protocol error
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-hpsa-fix-handling-of-protocol-error.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 256d0eaac87da1e993190846064f339f4c7a63f5 Mon Sep 17 00:00:00 2001
From: "Stephen M. Cameron" <[email protected]>
Date: Fri, 14 Sep 2012 16:34:25 -0500
Subject: SCSI: hpsa: fix handling of protocol error
From: "Stephen M. Cameron" <[email protected]>
commit 256d0eaac87da1e993190846064f339f4c7a63f5 upstream.
If a command status of CMD_PROTOCOL_ERR is received, this
information should be conveyed to the SCSI mid layer, not
dropped on the floor. CMD_PROTOCOL_ERR may be received
from the Smart Array for any commands destined for an external
RAID controller such as a P2000, or commands destined for tape
drives or CD/DVD-ROM drives, if for instance a cable is
disconnected. This mostly affects multipath configurations, as
disconnecting a cable on a non-multipath configuration is not
going to do anything good regardless of whether CMD_PROTOCOL_ERR
is handled correctly or not. Not handling CMD_PROTOCOL_ERR
correctly in a multipath configaration involving external RAID
controllers may cause data corruption, so this is quite a serious
bug. This bug should not normally cause a problem for direct
attached disk storage.
Signed-off-by: Stephen M. Cameron <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/scsi/hpsa.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1209,8 +1209,9 @@ static void complete_scsi_command(struct
}
break;
case CMD_PROTOCOL_ERR:
+ cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev, "cp %p has "
- "protocol error \n", cp);
+ "protocol error\n", cp);
break;
case CMD_HARDWARE_ERR:
cmd->result = DID_ERROR << 16;
Patches currently in stable-queue which might be from
[email protected] are
queue-3.0/scsi-hpsa-fix-handling-of-protocol-error.patch
queue-3.0/cciss-fix-handling-of-protocol-error.patch
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