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scsi: ufs: Have midlayer retry start stop errors

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This has the SCSI midlayer retry errors instead of driving them itself.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20240123002220.129141-19-michael.christie@oracle.com
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike Christie 2024-01-22 18:22:19 -06:00 committed by Martin K. Petersen
parent b72f2d149e
commit b8c3a7bac9
1 changed files with 12 additions and 10 deletions
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22
drivers/ufs/core/ufshcd.c
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@ -9475,7 +9475,17 @@ static int ufshcd_execute_start_stop(struct scsi_device *sdev,
struct scsi_sense_hdr *sshdr)
{
const unsigned char cdb[6] = { START_STOP, 0, 0, 0, pwr_mode << 4, 0 };
struct scsi_failure failure_defs[] = {
{
.allowed = 2,
.result = SCMD_FAILURE_RESULT_ANY,
},
};
struct scsi_failures failures = {
.failure_definitions = failure_defs,
};
const struct scsi_exec_args args = {
.failures = &failures,
.sshdr = sshdr,
.req_flags = BLK_MQ_REQ_PM,
.scmd_flags = SCMD_FAIL_IF_RECOVERING,
@ -9501,7 +9511,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
struct scsi_sense_hdr sshdr;
struct scsi_device *sdp;
unsigned long flags;
int ret, retries;
int ret;
spin_lock_irqsave(hba->host->host_lock, flags);
sdp = hba->ufs_device_wlun;
@ -9527,15 +9537,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
* callbacks hence set the RQF_PM flag so that it doesn't resume the
* already suspended childs.
*/
for (retries = 3; retries > 0; --retries) {
ret = ufshcd_execute_start_stop(sdp, pwr_mode, &sshdr);
/*
* scsi_execute() only returns a negative value if the request
* queue is dying.
*/
if (ret <= 0)
break;
}
ret = ufshcd_execute_start_stop(sdp, pwr_mode, &sshdr);
if (ret) {
sdev_printk(KERN_WARNING, sdp,
"START_STOP failed for power mode: %d, result %x\n",