ARM: SAMSUNG: Initialize PWM backlight enable_gpio field

The GPIO API defines 0 as being a valid GPIO number, so this field needs
to be initialized explicitly.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/dev-backlight.c b/arch/arm/plat-samsung/dev-backlight.c
index d51f9565567c..be4ad0b21c08 100644
--- a/arch/arm/plat-samsung/dev-backlight.c
+++ b/arch/arm/plat-samsung/dev-backlight.c
@@ -70,6 +70,7 @@ static struct samsung_bl_drvdata samsung_dfl_bl_data __initdata = {
                 .max_brightness = 255,
                 .dft_brightness = 255,
                 .pwm_period_ns  = 78770,
+                .enable_gpio    = -1,
                 .init           = samsung_bl_init,
                 .exit           = samsung_bl_exit,
         },
@@ -121,6 +122,10 @@ void __init samsung_bl_set(struct samsung_bl_gpio_info *gpio_info,
                 samsung_bl_data->lth_brightness = bl_data->lth_brightness;
         if (bl_data->pwm_period_ns)
                 samsung_bl_data->pwm_period_ns = bl_data->pwm_period_ns;
+        if (bl_data->enable_gpio >= 0)
+                samsung_bl_data->enable_gpio = bl_data->enable_gpio;
+        if (bl_data->enable_gpio_flags)
+                samsung_bl_data->enable_gpio_flags = bl_data->enable_gpio_flags;
         if (bl_data->init)
                 samsung_bl_data->init = bl_data->init;
         if (bl_data->notify)