From: Bart Van Assche Date: Tue, 24 Dec 2019 22:02:48 +0000 (-0800) Subject: scsi: ufs: Remove the SCSI timeout handler X-Git-Tag: v5.10.7~3244^2~66 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0dd0dec1677e0838f1c7a0f85f9053eab5b28d40;p=platform%2Fkernel%2Flinux-rpi.git 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 Cc: Can Guo Cc: Avri Altman Cc: Stanley Chu Cc: Tomas Winkler Link: https://lore.kernel.org/r/20191224220248.30138-7-bvanassche@acm.org Reviewed-by: Can Guo Reviewed-by: Alim Akhtar Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index f8e5f2d..b01c58f 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,