6.15-stable review patch. If anyone has any objections, please let me know.
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From: Ming Qian ming.qian@oss.nxp.com
commit d52b9b7e2f10d22a49468128540533e8d76910cd upstream.
When an output buffer contains error frame header, v4l2_jpeg_parse_header() will return error, then driver will mark this buffer and a capture buffer done with error flag in device_run().
But if the error occurs in the first frames, before setup the capture queue, there is no chance to schedule device_run(), and there may be no capture to mark error.
So we need to drop this buffer with error flag, and make the decoding can continue.
Fixes: 2db16c6ed72c ("media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder") Cc: stable@vger.kernel.org Signed-off-by: Ming Qian ming.qian@oss.nxp.com Reviewed-by: Nicolas Dufresne nicolas.dufresne@collabora.com Signed-off-by: Nicolas Dufresne nicolas.dufresne@collabora.com Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
--- a/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c +++ b/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c @@ -1918,9 +1918,19 @@ static void mxc_jpeg_buf_queue(struct vb jpeg_src_buf = vb2_to_mxc_buf(vb); jpeg_src_buf->jpeg_parse_error = false; ret = mxc_jpeg_parse(ctx, vb); - if (ret) + if (ret) { jpeg_src_buf->jpeg_parse_error = true;
+ /* + * if the capture queue is not setup, the device_run() won't be scheduled, + * need to drop the error buffer, so that the decoding can continue + */ + if (!vb2_is_streaming(v4l2_m2m_get_dst_vq(ctx->fh.m2m_ctx))) { + v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR); + return; + } + } + end: v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); }