From cff2ae2185394eba19d100596848c7e8e598c652 Mon Sep 17 00:00:00 2001
From: Devendra Naga <devendra.aaru@gmail.com>
Date: Sat, 25 May 2013 23:04:16 -0400
Subject: [PATCH] staging: btmtk_usb: check for a valid io_buf pointer

assigned to retval of kmalloc but not checked whether the allocation failed or not,
fail the registering if allocation fail

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Reading git-format-patch failed