From: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
During suspend, if the link is put to off, it would require
a full initialization during resume. This patch resets and
restores both the host and the card during initialization,
otherwise, host only reset and restore may fail occasionally.
Signed-off-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
Reviewed-by: Bean Huo <beanhuo@xxxxxxxxxx>
Reviewed-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
Acked-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
Change since v1:
- Incorporated Alim's comments.
---
drivers/scsi/ufs/ufshcd.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 64e42ef..90313c8 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8048,9 +8048,13 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
else
goto vendor_suspend;
} else if (ufshcd_is_link_off(hba)) {
- ret = ufshcd_host_reset_and_restore(hba);
/*
- * ufshcd_host_reset_and_restore() should have already
+ * A full initialization of the host and the device is
+ * required since the link was put to off during suspend.
+ */
+ ret = ufshcd_reset_and_restore(hba);
+ /*
+ * ufshcd_reset_and_restore() should have already
* set the link state as active
*/
if (ret || !ufshcd_is_link_active(hba))
--
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