Messages in this thread Patch in this message | | | From | Linus Walleij <> | Subject | [PATCH] backlight: add PWM dependencies | Date | Tue, 4 Feb 2014 13:57:14 +0100 |
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In some compilations the LM3630A and LP855X backlight drivers fail like this:
drivers/built-in.o: In function `lm3630a_pwm_ctrl': drivers/video/backlight/lm3630a_bl.c:168: undefined reference to `pwm_config' drivers/video/backlight/lm3630a_bl.c:172: undefined reference to `pwm_disable' drivers/video/backlight/lm3630a_bl.c:170: undefined reference to `pwm_enable' drivers/built-in.o: In function `lp855x_pwm_ctrl': drivers/video/backlight/lp855x_bl.c:249: undefined reference to `pwm_config' drivers/video/backlight/lp855x_bl.c:253: undefined reference to `pwm_disable' drivers/video/backlight/lp855x_bl.c:251: undefined reference to `pwm_enable'
This is because both drivers depend on the PWM framework, so add this dependency to their Kconfig entries.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- drivers/video/backlight/Kconfig | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 5a3eb2ecb525..0604c3348761 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -371,6 +371,7 @@ config BACKLIGHT_AAT2870 config BACKLIGHT_LM3630A tristate "Backlight Driver for LM3630A" depends on BACKLIGHT_CLASS_DEVICE && I2C + depends on PWM select REGMAP_I2C help This supports TI LM3630A Backlight Driver @@ -387,6 +388,7 @@ config BACKLIGHT_LM3639 config BACKLIGHT_LP855X tristate "Backlight driver for TI LP855X" depends on BACKLIGHT_CLASS_DEVICE && I2C + depends on PWM help This supports TI LP8550, LP8551, LP8552, LP8553, LP8555, LP8556 and LP8557 backlight driver. -- 1.8.5.3
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