staging: comedi: drivers: usbduxsigma.c: fix DMA buffers on stack
This patch fixes an instance of DMA buffer on stack(being passed to usb_control_msg)for the USB-DUXsigma Board driver. Found using smatch. Signed-off-by: NKumar Amit Mehta <gmate.amit@gmail.com> Reviewed-by: NDan Carpenter <dan.carpenter@oracle.com> Reviewed-by: NIan Abbott <abbotti@mev.co.uk> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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