usb: wusbcore: set the RPIPE wMaxPacketSize value correctly

For isochronous endpoints, set the RPIPE wMaxPacketSize value using
wOverTheAirPacketSize from the endpoint companion descriptor instead of
wMaxPacketSize from the normal endpoint descriptor.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Pugliese 2013-10-23 14:44:26 -05:00 коммит произвёл Greg Kroah-Hartman
Родитель df101c531e
Коммит 7b6bc07ab5
1 изменённых файлов: 4 добавлений и 1 удалений

Просмотреть файл

@ -334,7 +334,10 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa,
/* FIXME: compute so seg_size > ep->maxpktsize */
rpipe->descr.wBlocks = cpu_to_le16(16); /* given */
/* ep0 maxpktsize is 0x200 (WUSB1.0[4.8.1]) */
rpipe->descr.wMaxPacketSize = cpu_to_le16(ep->desc.wMaxPacketSize);
if (usb_endpoint_xfer_isoc(&ep->desc))
rpipe->descr.wMaxPacketSize = epcd->wOverTheAirPacketSize;
else
rpipe->descr.wMaxPacketSize = ep->desc.wMaxPacketSize;
rpipe->descr.hwa_bMaxBurst = max(min_t(unsigned int,
epcd->bMaxBurst, 16U), 1U);