Some device may cause a compatibility issue while receiving a Query UPIU with Data Segment which does not expected. Signed-off-by: Zang Leigang <zangleigang@xxxxxxxxxxxxx> --- drivers/scsi/ufs/ufshcd.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index f08d41a..7292333 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -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) + 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, -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
