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backlight: pwm_bl: Don't use GPIOF_* with gpiod_get_direction 

[ Upstream commit bb084c0f61 ]

The documentation was wrong, gpiod_get_direction() returns 0/1 instead
of the GPIOF_* flags. The docs were fixed with commit 94fc73094a
("gpio: correct docs about return value of gpiod_get_direction"). Now,
fix this user (until a better, system-wide solution is in place).

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Wolfram Sang 2018-01-14 22:07:10 +01:00 committed by Greg Kroah-Hartman
parent 232703c909
commit 4531135811
1 changed files with 3 additions and 3 deletions
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6
drivers/video/backlight/pwm_bl.c
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@ -301,14 +301,14 @@ static int pwm_backlight_probe(struct platform_device *pdev)
/*
* If the GPIO is not known to be already configured as output, that
* is, if gpiod_get_direction returns either GPIOF_DIR_IN or -EINVAL,
* change the direction to output and set the GPIO as active.
* is, if gpiod_get_direction returns either 1 or -EINVAL, change the
* direction to output and set the GPIO as active.
* Do not force the GPIO to active when it was already output as it
* could cause backlight flickering or we would enable the backlight too
* early. Leave the decision of the initial backlight state for later.
*/
if (pb->enable_gpio &&
gpiod_get_direction(pb->enable_gpio) != GPIOF_DIR_OUT)
gpiod_get_direction(pb->enable_gpio) != 0)
gpiod_direction_output(pb->enable_gpio, 1);
pb->power_supply = devm_regulator_get(&pdev->dev, "power");