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scsi: ufs: Revert "Retry aborted SCSI commands instead of completing these successfully" 

Commit 73dc3c4ac7 ("scsi: ufs: Retry aborted SCSI commands instead of
completing these successfully") is not necessary. If a SCSI command is
aborted successfully the UFS controller has not modified the command status
and the command status still has the value assigned by
ufshcd_prepare_req_desc_hdr(), namely OCS_INVALID_COMMAND_STATUS. The
function ufshcd_transfer_rsp_status() requeues commands that have an
invalid command status. Hence revert commit 73dc3c4ac7.

Link: https://lore.kernel.org/r/20211020214024.2007615-2-bvanassche@acm.org
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2021-10-20 14:40:15 -07:00 committed by Martin K. Petersen
parent 12b6fcd0ea
commit 1168252357
1 changed files with 11 additions and 22 deletions
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33
drivers/scsi/ufs/ufshcd.c
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@ -5248,11 +5248,9 @@ static irqreturn_t ufshcd_uic_cmd_compl(struct ufs_hba *hba, u32 intr_status)
* __ufshcd_transfer_req_compl - handle SCSI and query command completion
* @hba: per adapter instance
* @completed_reqs: bitmask that indicates which requests to complete
* @retry_requests: whether to ask the SCSI core to retry completed requests
*/
static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
unsigned long completed_reqs,
bool retry_requests)
unsigned long completed_reqs)
{
struct ufshcd_lrb *lrbp;
struct scsi_cmnd *cmd;
@ -5268,8 +5266,7 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
ufshcd_update_monitor(hba, lrbp);
ufshcd_add_command_trace(hba, index, UFS_CMD_COMP);
result = retry_requests ? DID_BUS_BUSY << 16 :
ufshcd_transfer_rsp_status(hba, lrbp);
result = ufshcd_transfer_rsp_status(hba, lrbp);
scsi_dma_unmap(cmd);
cmd->result = result;
/* Mark completed command as NULL in LRB */
@ -5295,14 +5292,12 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
/**
* ufshcd_transfer_req_compl - handle SCSI and query command completion
* @hba: per adapter instance
* @retry_requests: whether or not to ask to retry requests
*
* Returns
* IRQ_HANDLED - If interrupt is valid
* IRQ_NONE - If invalid interrupt
*/
static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba,
bool retry_requests)
static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
{
unsigned long completed_reqs, flags;
u32 tr_doorbell;
@ -5331,8 +5326,7 @@ static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba,
spin_unlock_irqrestore(&hba->outstanding_lock, flags);
if (completed_reqs) {
__ufshcd_transfer_req_compl(hba, completed_reqs,
retry_requests);
__ufshcd_transfer_req_compl(hba, completed_reqs);
return IRQ_HANDLED;
} else {
return IRQ_NONE;
@ -5831,13 +5825,7 @@ out:
/* Complete requests that have door-bell cleared */
static void ufshcd_complete_requests(struct ufs_hba *hba)
{
ufshcd_transfer_req_compl(hba, /*retry_requests=*/false);
ufshcd_tmc_handler(hba);
}
static void ufshcd_retry_aborted_requests(struct ufs_hba *hba)
{
ufshcd_transfer_req_compl(hba, /*retry_requests=*/true);
ufshcd_transfer_req_compl(hba);
ufshcd_tmc_handler(hba);
}
@ -6186,7 +6174,8 @@ again:
}
lock_skip_pending_xfer_clear:
ufshcd_retry_aborted_requests(hba);
/* Complete the requests that are cleared by s/w */
ufshcd_complete_requests(hba);
spin_lock_irqsave(hba->host->host_lock, flags);
hba->silence_err_logs = false;
@ -6478,7 +6467,7 @@ static irqreturn_t ufshcd_sl_intr(struct ufs_hba *hba, u32 intr_status)
retval |= ufshcd_tmc_handler(hba);
if (intr_status & UTP_TRANSFER_REQ_COMPL)
retval |= ufshcd_transfer_req_compl(hba, /*retry_requests=*/false);
retval |= ufshcd_transfer_req_compl(hba);
return retval;
}
@ -6898,7 +6887,7 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd)
err = ufshcd_clear_cmd(hba, pos);
if (err)
break;
__ufshcd_transfer_req_compl(hba, 1U << pos, false);
__ufshcd_transfer_req_compl(hba, 1U << pos);
}
}
@ -7060,7 +7049,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
dev_err(hba->dev,
"%s: cmd was completed, but without a notifying intr, tag = %d",
__func__, tag);
__ufshcd_transfer_req_compl(hba, 1UL << tag, /*retry_requests=*/false);
__ufshcd_transfer_req_compl(hba, 1UL << tag);
goto release;
}
@ -7126,7 +7115,7 @@ static int ufshcd_host_reset_and_restore(struct ufs_hba *hba)
ufshpb_reset_host(hba);
ufshcd_hba_stop(hba);
hba->silence_err_logs = true;
ufshcd_retry_aborted_requests(hba);
ufshcd_complete_requests(hba);
hba->silence_err_logs = false;
/* scale up clocks to max frequency before full reinitialization */