From 7ad319dd4dd7b5abccd1763fa22f7ae53fa277c1 Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Tue, 3 Sep 2019 17:11:41 -0300 Subject: [PATCH] media: ov6650: Fix .get_fmt() V4L2_SUBDEV_FORMAT_TRY support commit 39034bb0c26b76a2c3abc54aa28c185f18b40c2f upstream. Commit da298c6d98d5 ("[media] v4l2: replace video op g_mbus_fmt by pad op get_fmt") converted a former ov6650_g_fmt() video operation callback to an ov6650_get_fmt() pad operation callback. However, the converted function disregards a format->which flag that pad operations should obey and always returns active frame format settings. That can be fixed by always responding to V4L2_SUBDEV_FORMAT_TRY with -EINVAL, or providing the response from a pad config argument, likely updated by a former user call to V4L2_SUBDEV_FORMAT_TRY .set_fmt(). Since implementation of the latter is trivial, go for it. Fixes: da298c6d98d5 ("[media] v4l2: replace video op g_mbus_fmt by pad op get_fmt") Signed-off-by: Janusz Krzysztofik Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/i2c/ov6650.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c index 5fa3b2088b52..bbf15644e989 100644 --- a/drivers/media/i2c/ov6650.c +++ b/drivers/media/i2c/ov6650.c @@ -528,10 +528,16 @@ static int ov6650_get_fmt(struct v4l2_subdev *sd, *mf = ov6650_def_fmt; /* update media bus format code and frame size */ - mf->width = priv->rect.width >> priv->half_scale; - mf->height = priv->rect.height >> priv->half_scale; - mf->code = priv->code; + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { + mf->width = cfg->try_fmt.width; + mf->height = cfg->try_fmt.height; + mf->code = cfg->try_fmt.code; + } else { + mf->width = priv->rect.width >> priv->half_scale; + mf->height = priv->rect.height >> priv->half_scale; + mf->code = priv->code; + } return 0; }