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authorThomas Pugliese <thomas.pugliese@gmail.com>2013-10-23 14:44:26 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-29 16:44:49 -0700
commit7b6bc07ab554e929c85d51b3d5b26cf7f12c6a3b (patch)
treeb1d2d392b74d9d0c663ee005b44cc405ffea567f /drivers/usb
parentdf101c531eb737915349a1c4b677da7db55eaf69 (diff)
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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')
-rw-r--r--drivers/usb/wusbcore/wa-rpipe.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c
index 1ed068a..b48e74c 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);
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