From: Marek Vasut <marex@xxxxxxx> Calling S_STREAM OFF multiple times on a video device is valid, although dubious, practice. Instead of warning about it and setting stream count lower than zero, just ignore the subsequent S_STREAM calls and correct the stream count to zero. Signed-off-by: Marek Vasut <marex@xxxxxxx> --- drivers/staging/media/imx/imx-ic-prp.c | 3 ++- drivers/staging/media/imx/imx-ic-prpencvf.c | 3 ++- drivers/staging/media/imx/imx-media-csi.c | 3 ++- drivers/staging/media/imx/imx-media-vdic.c | 3 ++- drivers/staging/media/imx/imx6-mipi-csi2.c | 3 ++- 5 files changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/staging/media/imx/imx-ic-prp.c b/drivers/staging/media/imx/imx-ic-prp.c index 7bc293a..c34367e 100644 --- a/drivers/staging/media/imx/imx-ic-prp.c +++ b/drivers/staging/media/imx/imx-ic-prp.c @@ -387,7 +387,8 @@ static int prp_s_stream(struct v4l2_subdev *sd, int enable) update_count: priv->stream_count += enable ? 1 : -1; - WARN_ON(priv->stream_count < 0); + if (priv->stream_count < 0) + priv->stream_count = 0; out: mutex_unlock(&priv->lock); return ret; diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c index 5e9c817..ed363fe 100644 --- a/drivers/staging/media/imx/imx-ic-prpencvf.c +++ b/drivers/staging/media/imx/imx-ic-prpencvf.c @@ -1140,7 +1140,8 @@ static int prp_s_stream(struct v4l2_subdev *sd, int enable) update_count: priv->stream_count += enable ? 1 : -1; - WARN_ON(priv->stream_count < 0); + if (priv->stream_count < 0) + priv->stream_count = 0; out: mutex_unlock(&priv->lock); return ret; diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c index 4ab401d..0ec3176 100644 --- a/drivers/staging/media/imx/imx-media-csi.c +++ b/drivers/staging/media/imx/imx-media-csi.c @@ -861,7 +861,8 @@ static int csi_s_stream(struct v4l2_subdev *sd, int enable) update_count: priv->stream_count += enable ? 1 : -1; - WARN_ON(priv->stream_count < 0); + if (priv->stream_count < 0) + priv->stream_count = 0; out: mutex_unlock(&priv->lock); return ret; diff --git a/drivers/staging/media/imx/imx-media-vdic.c b/drivers/staging/media/imx/imx-media-vdic.c index c0b6d7f..7eabdc4 100644 --- a/drivers/staging/media/imx/imx-media-vdic.c +++ b/drivers/staging/media/imx/imx-media-vdic.c @@ -536,7 +536,8 @@ static int vdic_s_stream(struct v4l2_subdev *sd, int enable) update_count: priv->stream_count += enable ? 1 : -1; - WARN_ON(priv->stream_count < 0); + if (priv->stream_count < 0) + priv->stream_count = 0; out: mutex_unlock(&priv->lock); return ret; diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c index 49bc2c2..cfaf34a 100644 --- a/drivers/staging/media/imx/imx6-mipi-csi2.c +++ b/drivers/staging/media/imx/imx6-mipi-csi2.c @@ -396,7 +396,8 @@ static int csi2_s_stream(struct v4l2_subdev *sd, int enable) update_count: csi2->stream_count += enable ? 1 : -1; - WARN_ON(csi2->stream_count < 0); + if (csi2->stream_count < 0) + csi2->stream_count = 0; out: mutex_unlock(&csi2->lock); return ret; -- 2.7.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
