This is a note to let you know that I've just added the patch titled
usb: wusbcore: set the RPIPE wMaxPacketSize value correctly
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-next branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will also be merged in the next major kernel release
during the merge window.
If you have any questions about this process, please let me know.
>From 7b6bc07ab554e929c85d51b3d5b26cf7f12c6a3b Mon Sep 17 00:00:00 2001
From: Thomas Pugliese <thomas.pugliese@xxxxxxxxx>
Date: Wed, 23 Oct 2013 14:44:26 -0500
Subject: 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@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/wusbcore/wa-rpipe.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c
index 1ed068ac..b48e74cc 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);
--
1.8.4.3.gca3854a
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