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scsi: ufs: fix sense buffer size to 18 bytes 

According to UFS device specification, sense data can be only 18 bytes
long, this change makes the changes accordingly.

Signed-off-by: Gilad Broner <gbroner@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Gilad Broner 2016-10-17 17:09:48 -07:00 committed by Martin K. Petersen
parent ad1a1b9cd6
commit dcea0bfbc4
1 changed files with 7 additions and 5 deletions
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12
drivers/scsi/ufs/ufshcd.c
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@ -45,6 +45,8 @@
#include "ufs_quirks.h"
#include "unipro.h"
#define UFSHCD_REQ_SENSE_SIZE 18
#define UFSHCD_ENABLE_INTRS (UTP_TRANSFER_REQ_COMPL |\
UTP_TASK_REQ_COMPL |\
UFSHCD_ERROR_MASK)
@ -898,7 +900,7 @@ 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));
}
}
@ -1463,7 +1465,7 @@ 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);
@ -5594,19 +5596,19 @@ 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);