Commit e1b558cd authored by Ming Qian's avatar Ming Qian Committed by Mauro Carvalho Chehab
Browse files

media: amphion: add lock around vdec_g_fmt 



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: 6de8d628 ("media: amphion: add v4l2 m2m vpu decoder stateful driver")
Signed-off-by: default avatarMing Qian <ming.qian@nxp.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent f74d3f32

drivers/media/platform/amphion/vdec.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

}