[media] gspca: Update / fix various comments wrt workqueue usb_lock usage

[kernel/kernel-generic.git] / drivers / media / usb / gspca / sq905.c

diff --git a/drivers/media/usb/gspca/sq905.c b/drivers/media/usb/gspca/sq905.c
index 2e05aca..1d99f10 100644 (file)
--- a/drivers/media/usb/gspca/sq905.c
+++ b/drivers/media/usb/gspca/sq905.c
@@ -201,14 +201,13 @@ sq905_read_data(struct gspca_dev *gspca_dev, u8 *data, int size, int need_lock)
        return 0;
 }
 
-/* This function is called as a workqueue function and runs whenever the camera
+/*
+ * This function is called as a workqueue function and runs whenever the camera
  * is streaming data. Because it is a workqueue function it is allowed to sleep
  * so we can use synchronous USB calls. To avoid possible collisions with other
- * threads attempting to use the camera's USB interface we take the gspca
- * usb_lock when performing USB operations. In practice the only thing we need
- * to protect against is the usb_set_interface call that gspca makes during
- * stream_off as the camera doesn't provide any controls that the user could try
- * to change.
+ * threads attempting to use gspca_dev->usb_buf we take the usb_lock when
+ * performing USB operations using it. In practice we don't really need this
+ * as the camera doesn't provide any controls.
  */
 static void sq905_dostream(struct work_struct *work)
 {