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media: amphion: add lock around vdec_g_fmt

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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: 6de8d628df ("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>
This commit is contained in:
Ming Qian
2022-11-01 16:04:20 +08:00
committed by Hans Verkuil
parent a7bab6f8b7
commit 8480dd5fb3
1 changed files with 2 additions and 0 deletions
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2
drivers/media/platform/amphion/vdec.c
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@@ -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;
}