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[media] cx231xx: enforce check for graph creation

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If the graph creation fails, don't register the device.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-09-04 16:07:03 -03:00
parent 5e5387df04
commit ab232e46bf
1 changed files with 26 additions and 14 deletions
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40
drivers/media/usb/cx231xx/cx231xx-cards.c
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@ -1185,8 +1185,6 @@ static void cx231xx_unregister_media_device(struct cx231xx *dev)
*/
void cx231xx_release_resources(struct cx231xx *dev)
{
cx231xx_unregister_media_device(dev);
cx231xx_release_analog_resources(dev);
cx231xx_remove_from_devlist(dev);
@ -1199,6 +1197,8 @@ void cx231xx_release_resources(struct cx231xx *dev)
/* delete v4l2 device */
v4l2_device_unregister(&dev->v4l2_dev);
cx231xx_unregister_media_device(dev);
usb_put_dev(dev->udev);
/* Mark device as unused */
@ -1237,15 +1237,16 @@ static void cx231xx_media_device_register(struct cx231xx *dev,
#endif
}
static void cx231xx_create_media_graph(struct cx231xx *dev)
static int cx231xx_create_media_graph(struct cx231xx *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev = dev->media_dev;
struct media_entity *entity;
struct media_entity *tuner = NULL, *decoder = NULL;
int ret;
if (!mdev)
return;
return 0;
media_device_for_each_entity(entity, mdev) {
switch (entity->type) {
@ -1261,16 +1262,24 @@ static void cx231xx_create_media_graph(struct cx231xx *dev)
/* Analog setup, using tuner as a link */
if (!decoder)
return;
return 0;
if (tuner)
media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
MEDIA_LNK_FL_ENABLED);
media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (tuner) {
ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
MEDIA_LNK_FL_ENABLED);
if (ret < 0)
return ret;
}
ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (ret < 0)
return ret;
ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (ret < 0)
return ret;
#endif
return 0;
}
/*
@ -1732,9 +1741,12 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
/* load other modules required */
request_modules(dev);
cx231xx_create_media_graph(dev);
retval = cx231xx_create_media_graph(dev);
if (retval < 0) {
cx231xx_release_resources(dev);
}
return 0;
return retval;
err_video_alt:
/* cx231xx_uninit_dev: */
cx231xx_close_extension(dev);