tree cb27db40bc33117aebe3d60a7eef33317f9df5b0
parent 82e7784f57a81faf673b09bc468e736d582fe754
author Keith Packard <keithp@keithp.com> 1249599474 -0700
committer Len Brown <len.brown@intel.com> 1251487027 -0400

ACPI: don't free non-existent backlight in acpi video module

acpi_video_put_one_device was attempting to remove sysfs entries and
unregister a backlight device without first checking that said backlight
device structure had been created.

Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>