From: Keoseong Park Date: Tue, 25 Apr 2023 03:17:21 +0000 (+0900) Subject: scsi: ufs: core: Fix I/O hang that occurs when BKOPS fails in W-LUN suspend X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1a7edd041f2d252f251523ba3f2eaead076a8f8d;p=linux.git scsi: ufs: core: Fix I/O hang that occurs when BKOPS fails in W-LUN suspend Even when urgent BKOPS fails, the consumer will get stuck in runtime suspend status. Like commit 1a5665fc8d7a ("scsi: ufs: core: WLUN suspend SSU/enter hibern8 fail recovery"), trigger the error handler and return -EBUSY to break the suspend. Fixes: b294ff3e3449 ("scsi: ufs: core: Enable power management for wlun") Signed-off-by: Keoseong Park Link: https://lore.kernel.org/r/20230425031721epcms2p5d4de65616478c967d466626e20c42a3a@epcms2p5 Reviewed-by: Avri Altman Signed-off-by: Martin K. Petersen --- diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 17d7bb875fee8..45fd374fe56c1 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -9459,8 +9459,16 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) * that performance might be impacted. */ ret = ufshcd_urgent_bkops(hba); - if (ret) + if (ret) { + /* + * If return err in suspend flow, IO will hang. + * Trigger error handler and break suspend for + * error recovery. + */ + ufshcd_force_error_recovery(hba); + ret = -EBUSY; goto enable_scaling; + } } else { /* make sure that auto bkops is disabled */ ufshcd_disable_auto_bkops(hba);