This is a note to let you know that I've just added the patch titled
USB: cdc-wdm: better allocate a buffer that is at least as big as we tell
the USB core
to the 3.0-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-cdc-wdm-better-allocate-a-buffer-that-is-at-least-as-big-as-we-tell-the-usb-core.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 655e247daf52b202a6c2d0f8a06dd2051e756ce4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <[email protected]>
Date: Mon, 16 Jan 2012 15:11:59 +0100
Subject: USB: cdc-wdm: better allocate a buffer that is at least as big as we
tell the USB core
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From: Bjørn Mork <[email protected]>
commit 655e247daf52b202a6c2d0f8a06dd2051e756ce4 upstream.
As it turns out, there was a mismatch between the allocated inbuf size
(desc->bMaxPacketSize0, typically something like 64) and the length we
specified in the URB (desc->wMaxCommand, typically something like 2048)
Signed-off-by: Bjørn Mork <[email protected]>
Cc: Oliver Neukum <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/class/cdc-wdm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -723,7 +723,7 @@ next_desc:
goto err;
desc->inbuf = usb_alloc_coherent(interface_to_usbdev(intf),
- desc->bMaxPacketSize0,
+ desc->wMaxCommand,
GFP_KERNEL,
&desc->response->transfer_dma);
if (!desc->inbuf)
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/usb-cdc-wdm-use-two-mutexes-to-allow-simultaneous-read-and-write.patch
queue-3.0/usb-cdc-wdm-avoid-hanging-on-interface-with-no-usb_cdc_dmm_type.patch
queue-3.0/usb-cdc-wdm-call-wake_up_all-to-allow-driver-to-shutdown-on-device-removal.patch
queue-3.0/usb-cdc-wdm-updating-desc-length-must-be-protected-by-spin_lock.patch
queue-3.0/usb-cdc-wdm-better-allocate-a-buffer-that-is-at-least-as-big-as-we-tell-the-usb-core.patch
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