This is a note to let you know that I've just added the patch titled
scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
to the 4.4-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-megaraid_sas-fix-macro-megasas_is_logical-to-avoid-regression.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5e5ec1759dd663a1d5a2f10930224dd009e500e8 Mon Sep 17 00:00:00 2001
From: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
Date: Wed, 9 Nov 2016 02:59:42 -0800
Subject: scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
From: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
commit 5e5ec1759dd663a1d5a2f10930224dd009e500e8 upstream.
This patch will fix regression caused by commit 1e793f6fc0db ("scsi:
megaraid_sas: Fix data integrity failure for JBOD (passthrough)
devices").
The problem was that the MEGASAS_IS_LOGICAL macro did not have braces
and as a result the driver ended up exposing a lot of non-existing SCSI
devices (all SCSI commands to channels 1,2,3 were returned as
SUCCESS-DID_OK by driver).
[mkp: clarified patch description]
Fixes: 1e793f6fc0db920400574211c48f9157a37e3945
Reported-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
Tested-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx>
Tested-by: Jens Axboe <axboe@xxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1923,7 +1923,7 @@ struct megasas_instance_template {
};
#define MEGASAS_IS_LOGICAL(scp) \
- (scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1
+ ((scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1)
#define MEGASAS_DEV_INDEX(scp) \
(((scp->device->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + \
Patches currently in stable-queue which might be from sumit.saxena@xxxxxxxxxxxx are
queue-4.4/scsi-megaraid_sas-fix-macro-megasas_is_logical-to-avoid-regression.patch
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