'\" t
.\"     Title: usb_get_current_frame_number
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: USB Core APIs
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "USB_GET_CURRENT_FRAM" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "USB Core APIs"
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.SH "NAME"
usb_get_current_frame_number \- return current bus frame number
.SH "SYNOPSIS"
.HP \w'int\ usb_get_current_frame_number('u
.BI "int usb_get_current_frame_number(struct\ usb_device\ *\ " "dev" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
the device whose bus is being queried
.RE
.SH "RETURN"
.PP
The current frame number for the USB host controller used with the given USB device\&. This can be used when scheduling isochronous requests\&.
.SH "NOTE"
.PP
Different kinds of host controller have different
\(lqscheduling horizons\(rq\&. While one type might support scheduling only 32 frames into the future, others could support scheduling up to 1024 frames into the future\&.
.SH "COPYRIGHT"
.br