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-rw-r--r--extras/libmemif/src/main.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/extras/libmemif/src/main.c b/extras/libmemif/src/main.c
index 9b5bdd2f81d..372bf756a02 100644
--- a/extras/libmemif/src/main.c
+++ b/extras/libmemif/src/main.c
@@ -1398,11 +1398,13 @@ memif_buffer_alloc (memif_conn_handle_t conn, uint16_t qid,
uint16_t mask = (1 << mq->log2_ring_size) - 1;
uint16_t head = ring->head;
uint16_t tail = ring->tail;
+ uint16_t ring_size;
uint16_t s0, s1, ns;
*count_out = 0;
int i, err = MEMIF_ERR_SUCCESS; /* 0 */
- ns = (1 << mq->log2_ring_size) - head + tail;
+ ring_size = (1 << mq->log2_ring_size);
+ ns = ring_size - head + tail;
/* calculate number of chain buffers */
if (size > ring->desc[0].buffer_length)