[PATCH] scsi: ufs: Enable WB flush during suspend only if WB is enabled

Stanley Chu stanley.chu at mediatek.com
Mon Dec 7 00:50:06 EST 2020

WriteBootser flush during suspend is not necessary to be enabled if
WriteBooster feature is disabled. Simply adding a check to prevent
unexpected power drain.

Signed-off-by: Stanley Chu <stanley.chu at mediatek.com>
 drivers/scsi/ufs/ufshcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 4879e87577e1..89fa8b9ac11d 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5458,7 +5458,7 @@ static bool ufshcd_wb_need_flush(struct ufs_hba *hba)
 	u32 avail_buf;
 	u8 index;
-	if (!ufshcd_is_wb_allowed(hba))
+	if (!ufshcd_is_wb_allowed(hba) || !hba->wb_enabled)
 		return false;
 	 * The ufs device needs the vcc to be ON to flush.

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