Name
usb_get_current_frame_number —
return current bus frame number
Synopsis
int usb_get_current_frame_number ( | struct usb_device * dev); |
Arguments
dev
the device whose bus is being queried
Return
The current frame number for the USB host controller used
with the given USB device. This can be used when scheduling
isochronous requests.
Note
Different kinds of host controller have different “scheduling
horizons”. While one type might support scheduling only 32 frames
into the future, others could support scheduling up to 1024 frames
into the future.