From: Yunfei Dong <yunfei.dong@mediatek.com>
To: "Nícolas F . R . A . Prado" <nfraprado@collabora.com>,
"Sebastian Fricke" <sebastian.fricke@collabora.com>,
"Nicolas Dufresne" <nicolas.dufresne@collabora.com>,
"Hans Verkuil" <hverkuil-cisco@xs4all.nl>,
"AngeloGioacchino Del Regno"
<angelogioacchino.delregno@collabora.com>,
"Benjamin Gaignard" <benjamin.gaignard@collabora.com>,
"Nathan Hebert" <nhebert@chromium.org>,
"Andrzej Pietrasiewicz" <andrzej.p@collabora.com>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>,
Fritz Koenig <frkoenig@chromium.org>,
Daniel Vetter <daniel@ffwll.ch>,
Steve Cho <stevecho@chromium.org>,
"Yunfei Dong" <yunfei.dong@mediatek.com>,
<linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>
Subject: [PATCH v2 3/3] media: mediatek: vcodec: fix h264 stateless decoder smatch warning
Date: Thu, 13 Jun 2024 17:33:57 +0800 [thread overview]
Message-ID: <20240613093357.583-4-yunfei.dong@mediatek.com> (raw)
In-Reply-To: <20240613093357.583-1-yunfei.dong@mediatek.com>
Fix smatch static checker warning for vdec_h264_req_if.c. Leading
to kernel crash when fb is NULL.
Fixes: 06fa5f757dc5 ("media: mtk-vcodec: vdec: support stateless H.264 decoding")
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
.../mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c
index 73d5cef33b2a..1e1b32faac77 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c
@@ -347,11 +347,16 @@ static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
return vpu_dec_reset(vpu);
fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx);
+ if (!fb) {
+ mtk_vdec_err(inst->ctx, "fb buffer is NULL");
+ return -ENOMEM;
+ }
+
src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer);
- y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
- c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
+ y_fb_dma = fb->base_y.dma_addr;
+ c_fb_dma = fb->base_c.dma_addr;
mtk_vdec_debug(inst->ctx, "+ [%d] FB y_dma=%llx c_dma=%llx va=%p",
inst->num_nalu, y_fb_dma, c_fb_dma, fb);
--
2.18.0
prev parent reply other threads:[~2024-06-13 9:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-13 9:33 [PATCH v2 0/3] media: mediatek: vcodec: fix vcodec smatch warning Yunfei Dong
2024-06-13 9:33 ` [PATCH v2 1/3] media: mediatek: vcodec: fix h264 multi statless decoder " Yunfei Dong
2024-06-13 9:33 ` [PATCH v2 2/3] media: mediatek: vcodec: fix vp8 stateless " Yunfei Dong
2024-06-13 9:33 ` Yunfei Dong [this message]
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