Messages in this thread Patch in this message |  | | | Date | Wed, 01 Feb 2012 12:56:27 -0800 | | From | Greg KH <> | | Subject | [47/65] USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core |
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3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Bjørn Mork <bjorn@mork.no>
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 <bjorn@mork.no> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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)
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