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| author | Jinyoung Choi <j-young.choi@samsung.com> | 2022-02-14 19:33:52 +0900 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-14 22:10:29 -0500 |
| commit | 10af115646171afc0217177d6eae92917b785897 (patch) | |
| tree | c6e3f384f2310377748ff617eb534fb42f3a73d3 /drivers/scsi/ufs/ufshcd.c | |
| parent | 7f4c5a26f735dea4bbc0eb8eb9da99cda95a8563 (diff) | |
| download | linux-10af115646171afc0217177d6eae92917b785897.tar.bz2 | |
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/ufs/ufshcd.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 2 |
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); } |