The UFS SCSI timeout handler was needed to compensate that
ufshcd_queuecommand() could return SCSI_MLQUEUE_HOST_BUSY for a long
time. Commit a276c19e3e98 ("scsi: ufs: Avoid busy-waiting by eliminating
tag conflicts") fixed this so the timeout handler is no longer necessary.
See also commit f550c65b543b ("scsi: ufs: implement scsi host timeout handler").
Cc: Bean Huo <beanhuo@xxxxxxxxxx>
Cc: Can Guo <cang@xxxxxxxxxxxxxx>
Cc: Avri Altman <avri.altman@xxxxxxx>
Cc: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
Cc: Tomas Winkler <tomas.winkler@xxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
drivers/scsi/ufs/ufshcd.c | 36 ------------------------------------
1 file changed, 36 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index edcc137c436b..763e41286a4b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7092,41 +7092,6 @@ static void ufshcd_async_scan(void *data, async_cookie_t cookie)
ufshcd_probe_hba(hba);
}
-static enum blk_eh_timer_return ufshcd_eh_timed_out(struct scsi_cmnd *scmd)
-{
- unsigned long flags;
- struct Scsi_Host *host;
- struct ufs_hba *hba;
- int index;
- bool found = false;
-
- if (!scmd || !scmd->device || !scmd->device->host)
- return BLK_EH_DONE;
-
- host = scmd->device->host;
- hba = shost_priv(host);
- if (!hba)
- return BLK_EH_DONE;
-
- spin_lock_irqsave(host->host_lock, flags);
-
- for_each_set_bit(index, &hba->outstanding_reqs, hba->nutrs) {
- if (hba->lrb[index].cmd == scmd) {
- found = true;
- break;
- }
- }
-
- spin_unlock_irqrestore(host->host_lock, flags);
-
- /*
- * Bypass SCSI error handling and reset the block layer timer if this
- * SCSI command was not actually dispatched to UFS driver, otherwise
- * let SCSI layer handle the error as usual.
- */
- return found ? BLK_EH_DONE : BLK_EH_RESET_TIMER;
-}
-
static const struct attribute_group *ufshcd_driver_groups[] = {
&ufs_sysfs_unit_descriptor_group,
&ufs_sysfs_lun_attributes_group,
@@ -7145,7 +7110,6 @@ static struct scsi_host_template ufshcd_driver_template = {
.eh_abort_handler = ufshcd_abort,
.eh_device_reset_handler = ufshcd_eh_device_reset_handler,
.eh_host_reset_handler = ufshcd_eh_host_reset_handler,
- .eh_timed_out = ufshcd_eh_timed_out,
.this_id = -1,
.sg_tablesize = SG_ALL,
.cmd_per_lun = UFSHCD_CMD_PER_LUN,
