int340x_thermal/processor_thermal_device: return failure when
authorZhang Rui <rui.zhang@intel.com>
Sun, 4 Jan 2015 08:35:59 +0000 (16:35 +0800)
committerZhang Rui <rui.zhang@intel.com>
Tue, 6 Jan 2015 00:18:21 +0000 (08:18 +0800)
commitad0f409051a67dde8d454990e09b6db41f675876
treeb79ff6772c54d2c7f3955a88e639b461c4176199
parent014d9d5d0cc1da79bbe48fbc5e1068c5616238d2
int340x_thermal/processor_thermal_device: return failure when

 there is no ACPI device object

processor_thermal_device driver needs ACPI support to work. Thus, the driver
probing should fail when there is no ACPI device object asscociated.

This fixes a NULL pointer dereference when the driver is loaded
with INT340X feature disabled in BIOS.

Reported-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Chen Yu <yu.c.chen@intel.com>
drivers/thermal/int340x_thermal/processor_thermal_device.c