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usb_get_current_frame_number
Langue: en
Version: October 2010 (fedora - 01/12/10)
Section: 9 (Appels noyau Linux)
NAME
usb_get_current_frame_number - return current bus frame numberSYNOPSIS
- int usb_get_current_frame_number(struct usb_device * dev);
ARGUMENTS
dev
- the device whose bus is being queried
DESCRIPTION
Returns the current frame number for the USB host controller used with the given USB device. This can be used when scheduling isochronous requests.
Note that different kinds of host controller have different lqscheduling horizonsrq. While one type might support scheduling only 32 frames into the future, others could support scheduling up to 1024 frames into the future.
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