According to the V4L2 API, the VIDIOC_STREAMON ioctl should return EPIPE when the pipeline configuration is invalid. As the .vidioc_streamon in the v4l2_ioctl_ops usually forwards the error caused by the v4l2_subdev_link_validate_default (if it is in use), it should return -EPIPE if it detects a format mismatch in the pipeline configuration Signed-off-by: Helen Fornazier <helen.fornazier@xxxxxxxxx> --- drivers/media/v4l2-core/v4l2-subdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 6359606..5e64342 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -508,7 +508,7 @@ int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, if (source_fmt->format.width != sink_fmt->format.width || source_fmt->format.height != sink_fmt->format.height || source_fmt->format.code != sink_fmt->format.code) - return -EINVAL; + return -EPIPE; /* The field order must match, or the sink field order must be NONE * to support interlaced hardware connected to bridges that support @@ -516,7 +516,7 @@ int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, */ if (source_fmt->format.field != sink_fmt->format.field && sink_fmt->format.field != V4L2_FIELD_NONE) - return -EINVAL; + return -EPIPE; return 0; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
