diff options
Diffstat (limited to 'drivers/media/dvb-core')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 13dca47ea91e..85ae3669aa66 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2533,9 +2533,13 @@ static int dvb_frontend_open(struct inode *inode, struct file *file) fepriv->voltage = -1; #ifdef CONFIG_MEDIA_CONTROLLER_DVB - if (fe->dvb->mdev && fe->dvb->mdev->enable_source) { - ret = fe->dvb->mdev->enable_source(dvbdev->entity, + if (fe->dvb->mdev) { + mutex_lock(&fe->dvb->mdev->graph_mutex); + if (fe->dvb->mdev->enable_source) + ret = fe->dvb->mdev->enable_source( + dvbdev->entity, &fepriv->pipe); + mutex_unlock(&fe->dvb->mdev->graph_mutex); if (ret) { dev_err(fe->dvb->device, "Tuner is busy. Error %d\n", ret); @@ -2559,8 +2563,12 @@ static int dvb_frontend_open(struct inode *inode, struct file *file) err3: #ifdef CONFIG_MEDIA_CONTROLLER_DVB - if (fe->dvb->mdev && fe->dvb->mdev->disable_source) - fe->dvb->mdev->disable_source(dvbdev->entity); + if (fe->dvb->mdev) { + mutex_lock(&fe->dvb->mdev->graph_mutex); + if (fe->dvb->mdev->disable_source) + fe->dvb->mdev->disable_source(dvbdev->entity); + mutex_unlock(&fe->dvb->mdev->graph_mutex); + } err2: #endif dvb_generic_release(inode, file); @@ -2592,8 +2600,12 @@ static int dvb_frontend_release(struct inode *inode, struct file *file) if (dvbdev->users == -1) { wake_up(&fepriv->wait_queue); #ifdef CONFIG_MEDIA_CONTROLLER_DVB - if (fe->dvb->mdev && fe->dvb->mdev->disable_source) - fe->dvb->mdev->disable_source(dvbdev->entity); + if (fe->dvb->mdev) { + mutex_lock(&fe->dvb->mdev->graph_mutex); + if (fe->dvb->mdev->disable_source) + fe->dvb->mdev->disable_source(dvbdev->entity); + mutex_unlock(&fe->dvb->mdev->graph_mutex); + } #endif if (fe->exit != DVB_FE_NO_EXIT) wake_up(&dvbdev->wait_queue); |