From 7b727acc412c9320dc56a0fd7312febf8710ac0e Mon Sep 17 00:00:00 2001
From: axel lin <axel.lin@gmail.com>
Date: Thu, 25 Aug 2011 09:42:09 -0700
Subject: [PATCH] Input: cm109 - fix checking return value of usb_control_msg

If successful, usb_control_msg returns the number of bytes transferred,
otherwise a negative error number.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Reading git-format-patch failed