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hwmon: (adt7470) Fix writes to temperature limit registers
authorGuenter Roeck <linux@roeck-us.net>
Thu, 17 Jul 2014 00:40:31 +0000 (17:40 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 28 Jul 2014 15:00:03 +0000 (08:00 -0700)
commit0979b7169679cc91edcadd98ffbe389400bbc088
tree0673e5604c8f0d08b40dd689a6979210a4bc8f3ctree | snapshot
parent4c6d5fb84ff7ad51e7bf91dbe60ed6fe670f252dcommit | diff
hwmon: (adt7470) Fix writes to temperature limit registers

commit de12d6f4b10b21854441f5242dcb29ea96181e58 upstream.

Temperature limit registers are signed. Limits therefore need
to be clamped to (-128, 127) degrees C and not to (0, 255)
degrees C.

Without this fix, writing a limit of 128 degrees C sets the
actual limit to -128 degrees C.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hwmon/adt7470.c diff | blob | history
Domain: System / Kernel;