diff mbox series

[3/3] scsi: ufs: reset the ufs device before link startup retry

Message ID 20210205013633.16243-3-dh0421.hwang@samsung.com (mailing list archive)
State Deferred
Headers show
Series [1/3] scsi: ufs: retry link startup if that fails and device state is not active | expand

Commit Message

DooHyun Hwang(황두현/Device S/W Solution Lab.(MX)/삼성전자) Feb. 5, 2021, 1:36 a.m. UTC 
If the link startup command fails, trigger hardware reset to reset
the UFS device before link startup retry.

Signed-off-by: DooHyun Hwang <dh0421.hwang@samsung.com>
---
 drivers/scsi/ufs/ufshcd.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 32cb3b0dcbcf..a87e98631a72 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4644,7 +4644,15 @@  static int ufshcd_link_startup(struct ufs_hba *hba)
 				       (u32)ret);
 
 		if (link_startup_again) {
+			int err = 0;
+
 			link_startup_again = false;
+
+			/* Reset the attached device before retrying */
+			err = ufshcd_vops_device_reset(hba);
+			if (err && (err != -EOPNOTSUPP))
+				ufshcd_update_evt_hist(hba, UFS_EVT_DEV_RESET, err);
+
 			retries = DME_LINKSTARTUP_RETRIES;
 			goto link_startup;
 		}