From 0b73afec0e0f9230ba6f16a2d667dc214680b4f0 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 28 Aug 2024 13:22:51 +0100 Subject: [PATCH] fifo8: introduce head variable for fifo8_peekpop_bufptr() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Rather than operate on fifo->head directly, introduce a new head variable which is set to the value of fifo->head and use it instead. This is to allow future adjustment of the head position within the internal FIFO buffer. Signed-off-by: Mark Cave-Ayland Reviewed-by: Octavian Purdila Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé Message-ID: <20240828122258.928947-3-mark.cave-ayland@ilande.co.uk> Signed-off-by: Philippe Mathieu-Daudé --- util/fifo8.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/util/fifo8.c b/util/fifo8.c index 61bce9d9a0..5faa814a6e 100644 --- a/util/fifo8.c +++ b/util/fifo8.c @@ -75,11 +75,12 @@ static const uint8_t *fifo8_peekpop_bufptr(Fifo8 *fifo, uint32_t max, uint32_t *numptr, bool do_pop) { uint8_t *ret; - uint32_t num; + uint32_t num, head; assert(max > 0 && max <= fifo->num); - num = MIN(fifo->capacity - fifo->head, max); - ret = &fifo->data[fifo->head]; + head = fifo->head; + num = MIN(fifo->capacity - head, max); + ret = &fifo->data[head]; if (do_pop) { fifo->head += num;