From: Sakari Ailus <sakari.ai...@linux.intel.com> commit 8160e86702e0807bd36d40f82648f9f9820b9d5a upstream.
Return actual subdev format on ipu3-cio2 subdev pads. The earlier implementation was based on an infinite recursion that exhausted the stack. Reported-by: Tsuchiya Yuto <kita...@gmail.com> Fixes: c2a6a07afe4a ("media: intel-ipu3: cio2: add new MIPI-CSI2 driver") Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com> Reviewed-by: Bingbu Cao <bingbu....@intel.com> Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com> Cc: sta...@vger.kernel.org # v4.16 and up Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/media/pci/intel/ipu3/ipu3-cio2.c | 24 +++--------------------- 1 file changed, 3 insertions(+), 21 deletions(-) --- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c +++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c @@ -1244,29 +1244,11 @@ static int cio2_subdev_get_fmt(struct v4 struct v4l2_subdev_format *fmt) { struct cio2_queue *q = container_of(sd, struct cio2_queue, subdev); - struct v4l2_subdev_format format; - int ret; - if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); - return 0; - } - - if (fmt->pad == CIO2_PAD_SINK) { - format.which = V4L2_SUBDEV_FORMAT_ACTIVE; - ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, - &format); - - if (ret) - return ret; - /* update colorspace etc */ - q->subdev_fmt.colorspace = format.format.colorspace; - q->subdev_fmt.ycbcr_enc = format.format.ycbcr_enc; - q->subdev_fmt.quantization = format.format.quantization; - q->subdev_fmt.xfer_func = format.format.xfer_func; - } - - fmt->format = q->subdev_fmt; + else + fmt->format = q->subdev_fmt; return 0; }