Fix to the computation of available dequeue size.
Protects notably for possible negative scenarios when dequeuing
descriptors.
Fixes: e640f6cdfa84 ("baseband/acc200: add LDPC processing")
Cc: [email protected]
Signed-off-by: Hernan Vargas <[email protected]>
---
drivers/baseband/acc/acc_common.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/baseband/acc/acc_common.h
b/drivers/baseband/acc/acc_common.h
index 3d411cd25f..255e0971b8 100644
--- a/drivers/baseband/acc/acc_common.h
+++ b/drivers/baseband/acc/acc_common.h
@@ -1602,7 +1602,7 @@ acc_ring_avail_enq(struct acc_queue *q)
static inline uint32_t
acc_ring_avail_deq(struct acc_queue *q)
{
- return (q->sw_ring_depth + q->sw_ring_head - q->sw_ring_tail) &
q->sw_ring_wrap_mask;
+ return (q->sw_ring_head - q->sw_ring_tail) & q->sw_ring_wrap_mask;
}
/* Check room in AQ for the enqueues batches into Qmgr */
--
2.34.1
