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| author | Bart Van Assche <bvanassche@acm.org> | 2024-04-10 03:07:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-30 10:49:15 +0300 |
| commit | 6b9569a7a7c451fa8f229e261c8e15e4fefbc34e (patch) | |
| tree | 4d159704a0156755c1494aff8043f4eb332f07cb /drivers | |
| parent | 5383396623b7bac1426b87dffdde338953c0d3c6 (diff) | |
| download | linux-6b9569a7a7c451fa8f229e261c8e15e4fefbc34e.tar.xz | |
scsi: ufs: core: mcq: Fix ufshcd_mcq_sqe_search()
[ Upstream commit 3c5d0dce8ce0a2781ac306b9ad1492b005ecbab5 ]
Fix the calculation of the utrd pointer. This patch addresses the following
Coverity complaint:
CID 1538170: (#1 of 1): Extra sizeof expression (SIZEOF_MISMATCH)
suspicious_pointer_arithmetic: Adding sq_head_slot * 32UL /* sizeof (struct
utp_transfer_req_desc) */ to pointer hwq->sqe_base_addr of type struct
utp_transfer_req_desc * is suspicious because adding an integral value to
this pointer automatically scales that value by the size, 32 bytes, of the
pointed-to type, struct utp_transfer_req_desc. Most likely, the
multiplication by sizeof (struct utp_transfer_req_desc) in this expression
is extraneous and should be eliminated.
Cc: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Can Guo <quic_cang@quicinc.com>
Fixes: 8d7290348992 ("scsi: ufs: mcq: Add supporting functions for MCQ abort")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240410000751.1047758-1-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ufs/core/ufs-mcq.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index c873fd823942..7ae309681428 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -597,8 +597,7 @@ static bool ufshcd_mcq_sqe_search(struct ufs_hba *hba, addr = le64_to_cpu(cmd_desc_base_addr) & CQE_UCD_BA; while (sq_head_slot != hwq->sq_tail_slot) { - utrd = hwq->sqe_base_addr + - sq_head_slot * sizeof(struct utp_transfer_req_desc); + utrd = hwq->sqe_base_addr + sq_head_slot; match = le64_to_cpu(utrd->command_desc_base_addr) & CQE_UCD_BA; if (addr == match) { ufshcd_mcq_nullify_sqe(utrd); |