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-rw-r--r--drivers/misc/genwqe/card_ddcb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c
index f10575000180..51480e4f8054 100644
--- a/drivers/misc/genwqe/card_ddcb.c
+++ b/drivers/misc/genwqe/card_ddcb.c
@@ -390,8 +390,9 @@ static int genwqe_check_ddcb_queue(struct genwqe_dev *cd,
0x00000000)
goto go_home; /* not completed, continue waiting */
- /* Note: DDCB could be purged */
+ wmb(); /* Add sync to decouple prev. read operations */
+ /* Note: DDCB could be purged */
req = queue->ddcb_req[queue->ddcb_act];
if (req == NULL) {
/* this occurs if DDCB is purged, not an error */