Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6861285c authored by Zang Leigang's avatar Zang Leigang Committed by Martin K. Petersen
Browse files

scsi: ufs: Data Segment only needed for WRITE DESCRIPTOR 



Some devices have problems handling a Query UPIU with Data Segment
set. Only set it for WRITE DESCRIPTOR commands.

[mkp: updated patch description]

Signed-off-by: default avatarZang Leigang <zangleigang@hisilicon.com>
Reviewed-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: default avatarKiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent fe9b34bf

drivers/scsi/ufs/ufshcd.c

+6 −3
Original line number Diff line number Diff line
@@ -1266,9 +1266,12 @@ static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba, 
	ucd_req_ptr->header.dword_1 = UPIU_HEADER_DWORD(

			0, query->request.query_func, 0, 0);



	/* Data segment length */

	ucd_req_ptr->header.dword_2 = UPIU_HEADER_DWORD(

			0, 0, len >> 8, (u8)len);

	/* Data segment length only need for WRITE_DESC */

	if (query->request.upiu_req.opcode == UPIU_QUERY_OPCODE_WRITE_DESC)

		ucd_req_ptr->header.dword_2 =

			UPIU_HEADER_DWORD(0, 0, (len >> 8), (u8)len);

	else

		ucd_req_ptr->header.dword_2 = 0;



	/* Copy the Query Request buffer as is */

	memcpy(&ucd_req_ptr->qr, &query->request.upiu_req,