[Qemu-devel] [PATCH v5 2/4] util/fifo8: clear fifo head upon reset

[Beniamino Galvani <b.galvani@gmail.com>]

To improve the predictability of fifo8_pop_buf(), the fifo head is set
to start of data buffer upon a reset so that the first call to the
function will be able to retrieve all data in the fifo.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
---
 util/fifo8.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/util/fifo8.c b/util/fifo8.c
index a7503c2..6a43482 100644
--- a/util/fifo8.c
+++ b/util/fifo8.c
@@ -89,6 +89,7 @@ const uint8_t *fifo8_pop_buf(Fifo8 *fifo, uint32_t max, uint32_t *num)
 void fifo8_reset(Fifo8 *fifo)
 {
     fifo->num = 0;
+    fifo->head = 0;
 }
 
 bool fifo8_is_empty(Fifo8 *fifo)
-- 
1.7.10.4