From 5256ca41663c848ac24783a5161a97730a21696c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Bj=C3=B8rn=20Mork?= Date: Mon, 16 Jan 2012 15:11:59 +0100 Subject: [PATCH] USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-wdm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index ed4317365fa0..854615ca37ab 100644 --- 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) -- 2.39.5