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hwmon: (aspeed-pwm) add THERMAL dependency

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With CONFIG_THERMAL=m, a built-in aspeed pwm tacho driver causes
a link error:

drivers/hwmon/aspeed-pwm-tacho.o: In function `aspeed_pwm_tacho_probe':
aspeed-pwm-tacho.c:(.text+0x7f0): undefined reference to `thermal_of_cooling_device_register'

This adds a dependency similar to what other hwmon drivers use,
ensuring that the aspeed driver cannot be built-in in this
case but has to be a module. With THERMAL=n, we still allow building it.

Fixes: 2d7a548a3eff ("drivers: hwmon: Support for ASPEED PWM/Fan tach")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Arnd Bergmann 2017-08-15 16:47:47 +02:00 committed by Guenter Roeck
parent 1e069dfd96
commit d5553c2619
1 changed files with 1 additions and 0 deletions
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drivers/hwmon/Kconfig
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@ -343,6 +343,7 @@ config SENSORS_ASB100
config SENSORS_ASPEED
tristate "ASPEED AST2400/AST2500 PWM and Fan tach driver"
depends on THERMAL || THERMAL=n
select REGMAP
help
This driver provides support for ASPEED AST2400/AST2500 PWM