[ 3.5.yuz extended stable ] Patch "USB: cdc-acm: fix pipe type of write endpoint" has been added to staging queue

Herton Ronaldo Krzesinski herton.krzesinski at canonical.com
Wed Nov 21 05:09:16 UTC 2012

This is a note to let you know that I have just added a patch titled

    USB: cdc-acm: fix pipe type of write endpoint

to the linux-3.5.y-queue branch of the 3.5.yuz extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.yuz tree, see



>From 2d88b4ddbd0d8918222029cd8ebf496c66e0a6f5 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei at canonical.com>
Date: Tue, 16 Oct 2012 21:21:21 +0800
Subject: [PATCH] USB: cdc-acm: fix pipe type of write endpoint

commit c5211187f7ff8e8dbff4ebf7c011ac4c0ffe319c upstream.

If the write endpoint is interrupt type, usb_sndintpipe() should
be passed to usb_fill_int_urb() instead of usb_sndbulkpipe().

Cc: Oliver Neukum <oneukum at suse.de>
Signed-off-by: Ming Lei <ming.lei at canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
 drivers/usb/class/cdc-acm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 2e29044..f4593ee 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1234,7 +1234,7 @@ made_compressed_probe:

 		if (usb_endpoint_xfer_int(epwrite))
 			usb_fill_int_urb(snd->urb, usb_dev,
-				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
+				usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
 				NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
 			usb_fill_bulk_urb(snd->urb, usb_dev,

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