From: Ming Qian ming.qian@nxp.com
[ Upstream commit 8480dd5fb3c82b5887d456b3fbe4201d99231814 ]
the capture format may be changed when sequence header is parsed, it may be read and write in the same time, add lock around vdec_g_fmt to synchronize it
Fixes: 6de8d628df6e ("media: amphion: add v4l2 m2m vpu decoder stateful driver") Signed-off-by: Ming Qian ming.qian@nxp.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/amphion/vdec.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c index 84c90ce265f2..b27e6bed85f0 100644 --- a/drivers/media/platform/amphion/vdec.c +++ b/drivers/media/platform/amphion/vdec.c @@ -286,6 +286,7 @@ static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f) struct vpu_format *cur_fmt; int i;
+ vpu_inst_lock(inst); cur_fmt = vpu_get_format(inst, f->type);
pixmp->pixelformat = cur_fmt->pixfmt; @@ -303,6 +304,7 @@ static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f) f->fmt.pix_mp.xfer_func = vdec->codec_info.transfer_chars; f->fmt.pix_mp.ycbcr_enc = vdec->codec_info.matrix_coeffs; f->fmt.pix_mp.quantization = vdec->codec_info.full_range; + vpu_inst_unlock(inst);
return 0; }