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authorJinyoung Choi <j-young.choi@samsung.com>2022-02-14 13:33:52 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2022-02-15 06:10:29 +0300
commit10af115646171afc0217177d6eae92917b785897 (patch)
treec6e3f384f2310377748ff617eb534fb42f3a73d3 /drivers/scsi
parent7f4c5a26f735dea4bbc0eb8eb9da99cda95a8563 (diff)
downloadlinux-10af115646171afc0217177d6eae92917b785897.tar.xz
scsi: ufs: core: Fix divide by zero in ufshcd_map_queues()
Before calling blk_mq_map_queues(), the mq_map and nr_queues belonging to struct blk_mq_queue_map must have a valid value. If nr_queues is set to 0, the system may encounter a divide by zero depending on the type of architecture. blk_mq_map_queues() -> queue_index() Link: https://lore.kernel.org/r/1891546521.01644873481638.JavaMail.epsvc@epcpadp4 Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jinyoung Choi <j-young.choi@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ufs/ufshcd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 50b12d60dc1b..9349557b8a01 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2681,7 +2681,7 @@ static int ufshcd_map_queues(struct Scsi_Host *shost)
break;
case HCTX_TYPE_READ:
map->nr_queues = 0;
- break;
+ continue;
default:
WARN_ON_ONCE(true);
}