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    Subject[47/65] USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core
    3.0-stable review patch.  If anyone has any objections, please let me know.


    From: Bjørn Mork <>

    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(-)

    --- 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,
    if (!desc->inbuf)

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      Last update: 2012-02-01 22:11    [W:0.022 / U:3.036 seconds]
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