include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...

[net-next-2.6.git] / drivers / media / video / uvc / uvc_status.c

diff --git a/drivers/media/video/uvc/uvc_status.c b/drivers/media/video/uvc/uvc_status.c
index 21d87124986b57336afc53debe4315ce17d618a2..85019bdacdf757a31952e2602bd074d829fa4169 100644 (file)
--- a/drivers/media/video/uvc/uvc_status.c
+++ b/drivers/media/video/uvc/uvc_status.c
@@ -13,6 +13,7 @@
 
 #include <linux/kernel.h>
 #include <linux/input.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/input.h>
 
@@ -145,8 +146,8 @@ static void uvc_status_complete(struct urb *urb)
                        break;
 
                default:
-                       uvc_printk(KERN_INFO, "unknown event type %u.\n",
-                               dev->status[0]);
+                       uvc_trace(UVC_TRACE_STATUS, "Unknown status event "
+                               "type %u.\n", dev->status[0]);
                        break;
                }
        }
@@ -194,7 +195,7 @@ 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 +206,30 @@ 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);