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usb: add usb_endpoint_maxp() macro

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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
kuninori.morimoto.gx@renesas.com 2011-07-25 00:39:30 -07:00 committed by Greg Kroah-Hartman
parent 23106343db
commit 939f325f4a
1 changed files with 12 additions and 0 deletions
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12
include/linux/usb/ch9.h
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@ -34,6 +34,7 @@
#define __LINUX_USB_CH9_H
#include <linux/types.h> /* __u8 etc */
#include <asm/byteorder.h> /* le16_to_cpu */
/*-------------------------------------------------------------------------*/
@ -570,6 +571,17 @@ static inline int usb_endpoint_is_isoc_out(
return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd);
}
/**
* usb_endpoint_maxp - get endpoint's max packet size
* @epd: endpoint to be checked
*
* Returns @epd's max packet
*/
static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
{
return le16_to_cpu(epd->wMaxPacketSize);
}
/*-------------------------------------------------------------------------*/
/* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */