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path: root/drivers/media/video/uvc/uvc_status.c
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Diffstat (limited to 'drivers/media/video/uvc/uvc_status.c')
-rw-r--r--drivers/media/video/uvc/uvc_status.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/media/video/uvc/uvc_status.c b/drivers/media/video/uvc/uvc_status.c
index 21d87124986b..f152a9903862 100644
--- a/drivers/media/video/uvc/uvc_status.c
+++ b/drivers/media/video/uvc/uvc_status.c
@@ -194,7 +194,7 @@ int uvc_status_init(struct uvc_device *dev)
dev->status, UVC_MAX_STATUS_SIZE, uvc_status_complete,
dev, interval);
- return usb_submit_urb(dev->int_urb, GFP_KERNEL);
+ return 0;
}
void uvc_status_cleanup(struct uvc_device *dev)
@@ -205,15 +205,30 @@ void uvc_status_cleanup(struct uvc_device *dev)
uvc_input_cleanup(dev);
}
-int uvc_status_suspend(struct uvc_device *dev)
+int uvc_status_start(struct uvc_device *dev)
+{
+ if (dev->int_urb == NULL)
+ return 0;
+
+ return usb_submit_urb(dev->int_urb, GFP_KERNEL);
+}
+
+void uvc_status_stop(struct uvc_device *dev)
{
usb_kill_urb(dev->int_urb);
+}
+
+int uvc_status_suspend(struct uvc_device *dev)
+{
+ if (atomic_read(&dev->users))
+ usb_kill_urb(dev->int_urb);
+
return 0;
}
int uvc_status_resume(struct uvc_device *dev)
{
- if (dev->int_urb == NULL)
+ if (dev->int_urb == NULL || atomic_read(&dev->users) == 0)
return 0;
return usb_submit_urb(dev->int_urb, GFP_NOIO);