diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c index 61e03d4703f6184bd0579ec45c0c6902c7aad3a2..be45955dff686ebb38d598c8fb7e86d62ef6ca2f 100644 --- a/drivers/media/video/cx88/cx88-video.c +++ b/drivers/media/video/cx88/cx88-video.c @@ -839,6 +839,8 @@ static int video_open(struct inode *inode, struct file *file) } unlock_kernel(); + atomic_inc(&core->users); + return 0; } @@ -926,7 +928,8 @@ static int video_release(struct inode *inode, struct file *file) file->private_data = NULL; kfree(fh); - cx88_call_i2c_clients (dev->core, TUNER_SET_STANDBY, NULL); + if(atomic_dec_and_test(&dev->core->users)) + cx88_call_i2c_clients (dev->core, TUNER_SET_STANDBY, NULL); return 0; } diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h index 6420fb7615b16a1ce6133760f62bd84ed08c52ff..dce7d36edb426a4d1a462bb5645a60b9c60ff734 100644 --- a/drivers/media/video/cx88/cx88.h +++ b/drivers/media/video/cx88/cx88.h @@ -349,6 +349,7 @@ struct cx88_core { struct mutex lock; /* various v4l controls */ u32 freq; + atomic_t users; /* cx88-video needs to access cx8802 for hybrid tuner pll access. */ struct cx8802_dev *dvbdev;