From: Hans Verkuil <hans.verk...@cisco.com>
Before you can change the standard or the capture format, make sure the
various vb2_queues aren't in use since you cannot change the buffer size from
underneath a a busy vb2_queue.
Also make sure that the return code of cx23885_set_tvnorm is returned
correctly, otherwise the -EBUSY will be lost.
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/pci/cx23885/cx23885-417.c | 10 +++++-----
drivers/media/pci/cx23885/cx23885-video.c | 15 ++++++++++++---
2 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/media/pci/cx23885/cx23885-417.c
b/drivers/media/pci/cx23885/cx23885-417.c
index f1ef901..6973055 100644
--- a/drivers/media/pci/cx23885/cx23885-417.c
+++ b/drivers/media/pci/cx23885/cx23885-417.c
@@ -1248,18 +1248,18 @@ static int vidioc_s_std(struct file *file, void *priv,
v4l2_std_id id)
{
struct cx23885_dev *dev = video_drvdata(file);
unsigned int i;
+ int ret;
for (i = 0; i < ARRAY_SIZE(cx23885_tvnorms); i++)
if (id & cx23885_tvnorms[i].id)
break;
if (i == ARRAY_SIZE(cx23885_tvnorms))
return -EINVAL;
- dev->encodernorm = cx23885_tvnorms[i];
-
- /* Have the drier core notify the subdevices */
- cx23885_set_tvnorm(dev, id);
- return 0;
+ ret = cx23885_set_tvnorm(dev, id);
+ if (!ret)
+ dev->encodernorm = cx23885_tvnorms[i];
+ return ret;
}
static int vidioc_enum_input(struct file *file, void *priv,
diff --git a/drivers/media/pci/cx23885/cx23885-video.c
b/drivers/media/pci/cx23885/cx23885-video.c
index defdf74..f0ea904 100644
--- a/drivers/media/pci/cx23885/cx23885-video.c
+++ b/drivers/media/pci/cx23885/cx23885-video.c
@@ -119,6 +119,12 @@ int cx23885_set_tvnorm(struct cx23885_dev *dev,
v4l2_std_id norm)
(unsigned int)norm,
v4l2_norm_to_name(norm));
+ if (dev->tvnorm != norm) {
+ if (vb2_is_busy(&dev->vb2_vidq) || vb2_is_busy(&dev->vb2_vbiq)
||
+ vb2_is_busy(&dev->vb2_mpegq))
+ return -EBUSY;
+ }
+
dev->tvnorm = norm;
call_all(dev, video, s_std, norm);
@@ -591,6 +597,11 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void
*priv,
if (0 != err)
return err;
+
+ if (vb2_is_busy(&dev->vb2_vidq) || vb2_is_busy(&dev->vb2_vbiq) ||
+ vb2_is_busy(&dev->vb2_mpegq))
+ return -EBUSY;
+
dev->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
dev->width = f->fmt.pix.width;
dev->height = f->fmt.pix.height;
@@ -654,9 +665,7 @@ static int vidioc_s_std(struct file *file, void *priv,
v4l2_std_id tvnorms)
struct cx23885_dev *dev = video_drvdata(file);
dprintk(1, "%s()\n", __func__);
- cx23885_set_tvnorm(dev, tvnorms);
-
- return 0;
+ return cx23885_set_tvnorm(dev, tvnorms);
}
int cx23885_enum_input(struct cx23885_dev *dev, struct v4l2_input *i)
--
2.1.0.rc1
--
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