backlight: gpio_backlight: Drop output GPIO direction check for initial power state

[ Upstream commit fe1328b5b2a087221e31da77e617f4c2b70f3b7f ]

So, let's drop output GPIO direction check and only check GPIO value to set
the initial power state.

Fixes: 706dc68102bc ("backlight: gpio: Explicitly set the direction of the GPIO")
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230721093342.1532531-1-victor.liu@nxp.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index 5c5c99f..30ec5b6 100644 (file)
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -87,8 +87,7 @@ static int gpio_backlight_probe(struct platform_device *pdev)
                /* Not booted with device tree or no phandle link to the node */
                bl->props.power = def_value ? FB_BLANK_UNBLANK
                                            : FB_BLANK_POWERDOWN;
-       else if (gpiod_get_direction(gbl->gpiod) == 0 &&
-                gpiod_get_value_cansleep(gbl->gpiod) == 0)
+       else if (gpiod_get_value_cansleep(gbl->gpiod) == 0)
                bl->props.power = FB_BLANK_POWERDOWN;
        else
                bl->props.power = FB_BLANK_UNBLANK;