From: Thomas Pugliese Date: Wed, 23 Oct 2013 19:44:26 +0000 (-0500) Subject: usb: wusbcore: set the RPIPE wMaxPacketSize value correctly X-Git-Tag: next-20131105~15^2~15 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7b6bc07ab554e929c85d51b3d5b26cf7f12c6a3b;p=karo-tx-linux.git 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 Cc: stable Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c index 1ed068accb76..b48e74cc54d7 100644 --- a/drivers/usb/wusbcore/wa-rpipe.c +++ b/drivers/usb/wusbcore/wa-rpipe.c @@ -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);