6.6-stable review patch. If anyone has any objections, please let me know.
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From: Bart Van Assche bvanassche@acm.org
[ 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 --- drivers/ufs/core/ufs-mcq.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index c873fd8239427..7ae3096814282 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);