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| author | Thomas Pugliese <thomas.pugliese@gmail.com> | 2013-10-23 14:44:26 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-29 16:44:49 -0700 |
| commit | 7b6bc07ab554e929c85d51b3d5b26cf7f12c6a3b (patch) | |
| tree | b1d2d392b74d9d0c663ee005b44cc405ffea567f /drivers/usb/wusbcore/wa-rpipe.c | |
| parent | df101c531eb737915349a1c4b677da7db55eaf69 (diff) | |
| download | linux-7b6bc07ab554e929c85d51b3d5b26cf7f12c6a3b.tar.bz2 | |
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>
Diffstat (limited to 'drivers/usb/wusbcore/wa-rpipe.c')
| -rw-r--r-- | drivers/usb/wusbcore/wa-rpipe.c | 5 |
1 files changed, 4 insertions, 1 deletions
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); |