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authorBart Van Assche <bvanassche@acm.org>2019-12-24 14:02:48 -0800
committerMartin K. Petersen <martin.petersen@oracle.com>2020-01-02 21:57:44 -0500
commit0dd0dec1677e0838f1c7a0f85f9053eab5b28d40 (patch)
tree08001460ef90720e1634de342cca922a656cfa73 /drivers/scsi
parenteacf36f5bebde5089dddb3d5bfcbeab530b01f8a (diff)
scsi: ufs: Remove the SCSI timeout handler
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@micron.com> Cc: Can Guo <cang@codeaurora.org> Cc: Avri Altman <avri.altman@wdc.com> Cc: Stanley Chu <stanley.chu@mediatek.com> Cc: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191224220248.30138-7-bvanassche@acm.org Reviewed-by: Can Guo <cang@codeaurora.org> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ufs/ufshcd.c36
1 files changed, 0 insertions, 36 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index f8e5f2d9af17..b01c58ff8e8f 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7068,41 +7068,6 @@ 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,
@@ -7121,7 +7086,6 @@ 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,