linux-kernel - [PATCH v8 47/53] media: cedrus: Stop direct calls to queue num

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 27 Sep 2023 17:35:52 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     mchehab@...nel.org, tfiga@...omium.org, m.szyprowski@...sung.com,
        ming.qian@....com, ezequiel@...guardiasur.com.ar,
        p.zabel@...gutronix.de, gregkh@...uxfoundation.org,
        hverkuil-cisco@...all.nl, nicolas.dufresne@...labora.com
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v8 47/53] media: cedrus: Stop direct calls to queue num_buffers field

Use vb2_get_num_buffers() and queue max_num_buffers field
to avoid using queue num_buffer field directly.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
 drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 8 ++++++--
 drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
index dfb401df138a..88061310f815 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -653,8 +653,12 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
 
 	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 
-	for (i = 0; i < vq->num_buffers; i++) {
-		buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+	for (i = 0; i < vq->max_num_buffers; i++) {
+		struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+		if (!vb)
+			continue;
+		buf = vb2_to_cedrus_buffer(vb);
 
 		if (buf->codec.h264.mv_col_buf_size > 0) {
 			dma_free_attrs(dev->dev,
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index fc9297232456..b8b66d0d951e 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
 
 	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 
-	for (i = 0; i < vq->num_buffers; i++) {
-		buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+	for (i = 0; i < vq->max_num_buffers; i++) {
+		struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+		if (!vb)
+			continue;
+
+		buf = vb2_to_cedrus_buffer(vb);
 
 		if (buf->codec.h265.mv_col_buf_size > 0) {
 			dma_free_attrs(dev->dev,
-- 
2.39.2