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Commit abb62184 authored by Felipe Balbi's avatar Felipe Balbi
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usb: ch9: make usb_endpoint_maxp() return only packet size 



Now that we have a helper to gather periodic
endpoints' multiplier bits from wMaxPacketSize and
every driver is using it, we can safely make sure
that usb_endpoint_maxp() returns only bits 10:0 of
wMaxPacketSize which is where the actual packet size
lies.

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 6ddcabc2

include/uapi/linux/usb/ch9.h

+3 −2
Original line number Diff line number Diff line
@@ -423,6 +423,7 @@ struct usb_endpoint_descriptor { 
#define USB_ENDPOINT_XFER_INT		3

#define USB_ENDPOINT_MAX_ADJUSTABLE	0x80



#define USB_ENDPOINT_MAXP_MASK	0x07ff

#define USB_EP_MAXP_MULT_SHIFT	11

#define USB_EP_MAXP_MULT_MASK	(3 << USB_EP_MAXP_MULT_SHIFT)

#define USB_EP_MAXP_MULT(m) \
@@ -628,11 +629,11 @@ static inline int usb_endpoint_is_isoc_out( 
 * usb_endpoint_maxp - get endpoint's max packet size

 * @epd: endpoint to be checked

 *

 * Returns @epd's max packet

 * Returns @epd's max packet bits [10:0]

 */

static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)

{

	return __le16_to_cpu(epd->wMaxPacketSize);

	return __le16_to_cpu(epd->wMaxPacketSize) & USB_ENDPOINT_MAXP_MASK;

}



/**