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 the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-wusbcore-set-the-rpipe-wmaxpacketsize-value-correctly.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d83ceadbcef3426b566bdd6dea16043bfaa12a75 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
From: Thomas Pugliese <thomas.pugliese@xxxxxxxxx>
commit 7b6bc07ab554e929c85d51b3d5b26cf7f12c6a3b upstream.
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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/wusbcore/wa-rpipe.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/usb/wusbcore/wa-rpipe.c
+++ b/drivers/usb/wusbcore/wa-rpipe.c
@@ -332,7 +332,10 @@ static int rpipe_aim(struct wa_rpipe *rp
/* 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.bHSHubAddress = 0; /* reserved: zero */
rpipe->descr.bHSHubPort = wusb_port_no_to_idx(urb->dev->portnum);
/* FIXME: use maximum speed as supported or recommended by device */
Patches currently in stable-queue which might be from thomas.pugliese@xxxxxxxxx are
queue-3.4/usb-wusbcore-change-wa_segs_max-to-a-legal-value.patch
queue-3.4/usb-wusbcore-set-the-rpipe-wmaxpacketsize-value-correctly.patch
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