diff options
| author | Xiaomeng Tong <xiam0nd.tong@gmail.com> | 2022-03-20 23:07:33 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-04-06 22:40:41 -0400 |
| commit | bfb7789bcbd901caead43861461bc8f334c90d3b (patch) | |
| tree | 89932197c4ad0589f747fb89c868de37b1b1d684 /drivers/scsi/ufs | |
| parent | 03252259e18e63eb56a0d29c2fefcc30b58b812b (diff) | |
scsi: ufs: ufshpb: Fix a NULL check on list iterator
The list iterator is always non-NULL so the check 'if (!rgn)' is always
false and the dev_err() is never called. Move the check outside the loop
and determine if 'victim_rgn' is NULL, to fix this bug.
Link: https://lore.kernel.org/r/20220320150733.21824-1-xiam0nd.tong@gmail.com
Fixes: 4b5f49079c52 ("scsi: ufs: ufshpb: L2P map management for HPB read")
Reviewed-by: Daejun Park <daejun7.park@samsung.com>
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs')
| -rw-r--r-- | drivers/scsi/ufs/ufshpb.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c index b2bec19022cd..81099b68bbfb 100644 --- a/drivers/scsi/ufs/ufshpb.c +++ b/drivers/scsi/ufs/ufshpb.c @@ -867,12 +867,6 @@ static struct ufshpb_region *ufshpb_victim_lru_info(struct ufshpb_lu *hpb) struct ufshpb_region *rgn, *victim_rgn = NULL; list_for_each_entry(rgn, &lru_info->lh_lru_rgn, list_lru_rgn) { - if (!rgn) { - dev_err(&hpb->sdev_ufs_lu->sdev_dev, - "%s: no region allocated\n", - __func__); - return NULL; - } if (ufshpb_check_srgns_issue_state(hpb, rgn)) continue; @@ -888,6 +882,11 @@ static struct ufshpb_region *ufshpb_victim_lru_info(struct ufshpb_lu *hpb) break; } + if (!victim_rgn) + dev_err(&hpb->sdev_ufs_lu->sdev_dev, + "%s: no region allocated\n", + __func__); + return victim_rgn; } |