[Maverick SRU] intel_ips: potential null dereference

[AceLan Kao]

SRU Justification:

Impact: There is a potential NULL pointer dereference bug in the intel_ips
module, once it happens, system will encounter an OOPS and prevent system
from entering X window.

Fix: Prevent the NULL pointer to be used, if no CPUID matches.

Testcase: With the patch, the system can boot into X window without any error 
msg, or user will get a black and blank screen. 

The bug reporter and I can confirm this patch fixed the problem.

BugLink: https://bugs.launchpad.net/linux/+bug/648631

The following changes since commit 37ee3e07049bb895e3a6dd852537e6eecf08f9e9:

  Linux 2.6.35.7 (2010-10-11 13:43:46 -0700)

are available in the git repository at:
  git://kernel.ubuntu.com/acelan/ubuntu-maverick.git lp648631

Dan Carpenter (1):
      intel_ips: potential null dereference

 drivers/platform/x86/intel_ips.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)