From: Punit Agrawal <punit.agrawal@arm.com>
Date: Tue, 9 Dec 2014 12:22:01 +0000 (+0000)
Subject: thermal: Fix cdev registration with THERMAL_NO_LIMIT on 64bit
X-Git-Tag: fixes-v4.0-rc1~365^2^2~1^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a940cb34fed73b2d4809a4575f2981d5927e2c21;p=pandora-kernel.git

thermal: Fix cdev registration with THERMAL_NO_LIMIT on 64bit

The size of unsigned long varies between 32 and 64 bit systems while
the size of phandle arguments is always 32 bits per parameter.

On 64-bit systems, cooling devices registered via of-thermal apis fail
to bind when the min/max cooling state is specified as
THERMAL_NO_LIMIT (-1UL) as there is a mis-match between the value read
from the device tree (32bit) and the pre-processor define (64bit).

As we're unlikely to need cooling states larger than 32 bits, and for
consistency with the size of phandle arguments, explicitly limit
THERMAL_NO_LIMIT to 32 bits.

Reported-by: Hyungwoo Yang <hwoo.yang@gmail.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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