This is a note to let you know that I've just added the patch titled
usb: gadget: zero: Fix SuperSpeed enumeration for alternate setting 1
to the 3.10-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-gadget-zero-fix-superspeed-enumeration-for-alternate-setting-1.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9c1b70361e0b38e4acb8e62b54da66538cb77ff2 Mon Sep 17 00:00:00 2001
From: Roger Quadros <rogerq@xxxxxx>
Date: Wed, 26 Mar 2014 18:46:38 +0200
Subject: usb: gadget: zero: Fix SuperSpeed enumeration for alternate setting 1
From: Roger Quadros <rogerq@xxxxxx>
commit 9c1b70361e0b38e4acb8e62b54da66538cb77ff2 upstream.
It was impossible to enumerate on a SuperSpeed (XHCI) host
with alternate setting = 1 due to the wrongly set 'bMaxBurst'
field in the SuperSpeed Endpoint Companion descriptor.
Testcase:
<host> modprobe -r usbtest; modprobe usbtest alt=1
<device> modprobe g_zero
plug device to SuperSpeed port on the host.
Without this patch the host always complains like so
"usb 12-2: Not enough bandwidth for new device state.
usb 12-2: Not enough bandwidth for altsetting 1"
Bug was introduced by commit cf9a08ae in v3.9
Fixes: cf9a08ae5aec (usb: gadget: convert source sink and loopback to
new function interface)
Reviewed-by: Felipe Balbi <balbi@xxxxxx>
Acked-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: Roger Quadros <rogerq@xxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/gadget/zero.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -280,7 +280,7 @@ static int __init zero_bind(struct usb_c
ss_opts->isoc_interval = gzero_options.isoc_interval;
ss_opts->isoc_maxpacket = gzero_options.isoc_maxpacket;
ss_opts->isoc_mult = gzero_options.isoc_mult;
- ss_opts->isoc_maxburst = gzero_options.isoc_maxpacket;
+ ss_opts->isoc_maxburst = gzero_options.isoc_maxburst;
ss_opts->bulk_buflen = gzero_options.bulk_buflen;
func_ss = usb_get_function(func_inst_ss);
Patches currently in stable-queue which might be from rogerq@xxxxxx are
queue-3.10/usb-gadget-zero-fix-superspeed-enumeration-for-alternate-setting-1.patch
queue-3.10/arm-omap3-hwmod-data-correct-clock-domains-for-usb-modules.patch
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