• Linus Torvalds's avatar
    thermal: int340x: fix build on 32-bit targets · d9c8e52f
    Linus Torvalds authored
    Commit aeb58c86 ("thermal/drivers/int340x: processor_thermal: Suppot
    64 bit RFIM responses") started using 'readq()' to read 64-bit status
    responses from the int340x hardware.
    
    That's all fine and good, but on 32-bit targets a 64-bit 'readq()' is
    ambiguous, since it's no longer an atomic access.  Some hardware might
    require 64-bit accesses, and other hardware might want low word first or
    high word first.
    
    It's quite likely that the driver isn't relevant in a 32-bit environment
    any more, and there's a patch floating around to just make it depend on
    X86_64, but let's make it buildable on x86-32 anyway.
    
    The driver previously just read the low 32 bits, so the hardware
    certainly is ok with 32-bit reads, and in a little-endian environment
    the low word first model is the natural one.
    
    So just add the include for the 'io-64-nonatomic-lo-hi.h' version.
    
    Fixes: aeb58c86 ("thermal/drivers/int340x: processor_thermal: Suppot 64 bit RFIM responses")
    Reported-by: default avatarJakub Kicinski <kuba@kernel.org>
    Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
    Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    d9c8e52f
processor_thermal_mbox.c 4.76 KB