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Commit e0a7445a authored by Gilad Broner's avatar Gilad Broner Committed by Subhash Jadavani
Browse files

scsi: ufs: set REQUEST_SENSE command size to 18 bytes 



According to UFS device specification REQUEST_SENSE command can
only report back up to 18 bytes of data.

Change-Id: I1121b016ddabfa0e7182a1b6c9b30c27061694d2
Signed-off-by: default avatarGilad Broner <gbroner@codeaurora.org>
parent c891d2c4

drivers/scsi/ufs/ufshcd.c

+7 −5
Original line number Diff line number Diff line
@@ -106,6 +106,8 @@ 


#endif



#define UFSHCD_REQ_SENSE_SIZE	18



#define UFSHCD_ENABLE_INTRS	(UTP_TRANSFER_REQ_COMPL |\

				 UTP_TASK_REQ_COMPL |\

				 UFSHCD_ERROR_MASK)
@@ -932,19 +934,19 @@ ufshcd_send_request_sense(struct ufs_hba *hba, struct scsi_device *sdp) 
				0,

				0,

				0,

				SCSI_SENSE_BUFFERSIZE,

				UFSHCD_REQ_SENSE_SIZE,

				0};

	char *buffer;

	int ret;



	buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);

	buffer = kzalloc(UFSHCD_REQ_SENSE_SIZE, GFP_KERNEL);

	if (!buffer) {

		ret = -ENOMEM;

		goto out;

	}



	ret = scsi_execute_req_flags(sdp, cmd, DMA_FROM_DEVICE, buffer,

				SCSI_SENSE_BUFFERSIZE, NULL,

				UFSHCD_REQ_SENSE_SIZE, NULL,

				msecs_to_jiffies(1000), 3, NULL, REQ_PM);

	if (ret)

		pr_err("%s: failed with err %d\n", __func__, ret);
@@ -1861,7 +1863,7 @@ static inline void ufshcd_copy_sense_data(struct ufshcd_lrb *lrbp) 


		memcpy(lrbp->sense_buffer,

			lrbp->ucd_rsp_ptr->sr.sense_data,

			min_t(int, len_to_copy, SCSI_SENSE_BUFFERSIZE));

			min_t(int, len_to_copy, UFSHCD_REQ_SENSE_SIZE));

	}

}
@@ -2413,7 +2415,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) 


	WARN_ON(lrbp->cmd);

	lrbp->cmd = cmd;

	lrbp->sense_bufflen = SCSI_SENSE_BUFFERSIZE;

	lrbp->sense_bufflen = UFSHCD_REQ_SENSE_SIZE;

	lrbp->sense_buffer = cmd->sense_buffer;

	lrbp->task_tag = tag;

	lrbp->lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);