scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression

[ Upstream commit 5e5ec1759dd663a1d5a2f10930224dd009e500e8 ]

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@kernel.dk>
CC: stable@vger.kernel.org
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Tested-by: Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Tested-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index a49914de4b954806fb988d0e4e12d96d753126a5..4cf75e01c4980d2e2bf761882920de5fe44ef249 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1823,7 +1823,7 @@ 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(inst, scp)                                   \
        ((scp->device->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +    \