diff options
-rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 36 | ||||
-rw-r--r-- | drivers/media/usb/uvc/uvcvideo.h | 4 |
2 files changed, 28 insertions, 12 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 22886b47d81c..1d5be045d04e 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -26,6 +26,27 @@ #include "uvcvideo.h" +int uvc_pm_get(struct uvc_device *dev) +{ + int ret; + + ret = usb_autopm_get_interface(dev->intf); + if (ret) + return ret; + + ret = uvc_status_get(dev); + if (ret) + usb_autopm_put_interface(dev->intf); + + return ret; +} + +void uvc_pm_put(struct uvc_device *dev) +{ + uvc_status_put(dev); + usb_autopm_put_interface(dev->intf); +} + static int uvc_acquire_privileges(struct uvc_fh *handle); static int uvc_control_add_xu_mapping(struct uvc_video_chain *chain, @@ -642,20 +663,13 @@ static int uvc_v4l2_open(struct file *file) stream = video_drvdata(file); uvc_dbg(stream->dev, CALLS, "%s\n", __func__); - ret = usb_autopm_get_interface(stream->dev->intf); - if (ret < 0) - return ret; - /* Create the device handle. */ handle = kzalloc(sizeof(*handle), GFP_KERNEL); - if (handle == NULL) { - usb_autopm_put_interface(stream->dev->intf); + if (!handle) return -ENOMEM; - } - ret = uvc_status_get(stream->dev); + ret = uvc_pm_get(stream->dev); if (ret) { - usb_autopm_put_interface(stream->dev->intf); kfree(handle); return ret; } @@ -690,9 +704,7 @@ static int uvc_v4l2_release(struct file *file) kfree(handle); file->private_data = NULL; - uvc_status_put(stream->dev); - - usb_autopm_put_interface(stream->dev->intf); + uvc_pm_put(stream->dev); return 0; } diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 5ceb01e7831a..b9f8eb62ba1d 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -768,6 +768,10 @@ void uvc_status_suspend(struct uvc_device *dev); int uvc_status_get(struct uvc_device *dev); void uvc_status_put(struct uvc_device *dev); +/* PM */ +int uvc_pm_get(struct uvc_device *dev); +void uvc_pm_put(struct uvc_device *dev); + /* Controls */ extern const struct v4l2_subscribed_event_ops uvc_ctrl_sub_ev_ops; |