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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>
18 lines
342 B
C
18 lines
342 B
C
/*
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* This header provides constants for most thermal bindings.
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*
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* Copyright (C) 2013 Texas Instruments
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* Eduardo Valentin <eduardo.valentin@ti.com>
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*
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* GPLv2 only
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*/
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#ifndef _DT_BINDINGS_THERMAL_THERMAL_H
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#define _DT_BINDINGS_THERMAL_THERMAL_H
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/* On cooling devices upper and lower limits */
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#define THERMAL_NO_LIMIT (~0)
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#endif
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