[PATCH] scsi: ufs: Use pre-calculated offsets in ufshcd_init_lrb

From: Avri Altman
Date: Mon Sep 09 2024 - 05:58:56 EST


Replace manual offset calculations for response_upiu and prd_table in
ufshcd_init_lrb() with pre-calculated offsets already stored in the
utp_transfer_req_desc structure. The pre-calculated offsets are set
differently in ufshcd_host_memory_configure() based on the
UFSHCD_QUIRK_PRDT_BYTE_GRAN quirk, ensuring correct alignment and
access.

Signed-off-by: Avri Altman <avri.altman@xxxxxxx>
---
drivers/ufs/core/ufshcd.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 8ea5a82503a9..e7ed3625710e 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -2919,9 +2919,8 @@ static void ufshcd_init_lrb(struct ufs_hba *hba, struct ufshcd_lrb *lrb, int i)
struct utp_transfer_req_desc *utrdlp = hba->utrdl_base_addr;
dma_addr_t cmd_desc_element_addr = hba->ucdl_dma_addr +
i * ufshcd_get_ucd_size(hba);
- u16 response_offset = offsetof(struct utp_transfer_cmd_desc,
- response_upiu);
- u16 prdt_offset = offsetof(struct utp_transfer_cmd_desc, prd_table);
+ u16 response_offset = utrdlp[i].response_upiu_offset;
+ u16 prdt_offset = utrdlp[i].prd_table_offset;

lrb->utr_descriptor_ptr = utrdlp + i;
lrb->utrd_dma_addr = hba->utrdl_dma_addr +
--
2.25.1