linux-kernel - [PATCH 4.14 180/246] backlight: pwm_bl: Dont use GPIOF_* with gpiod_get

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Message-Id: <20180801165020.345834849@linuxfoundation.org>
Date:   Wed,  1 Aug 2018 18:51:30 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Simon Horman <horms+renesas@...ge.net.au>,
        Lee Jones <lee.jones@...aro.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.14 180/246] backlight: pwm_bl: Dont use GPIOF_* with gpiod_get_direction

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa+renesas@...g-engineering.com>

[ Upstream commit bb084c0f61d659f0e6d371b096e0e57998f191d6 ]

The documentation was wrong, gpiod_get_direction() returns 0/1 instead
of the GPIOF_* flags. The docs were fixed with commit 94fc73094abe47
("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@...g-engineering.com>
Acked-by: Daniel Thompson <daniel.thompson@...aro.org>
Reviewed-by: Simon Horman <horms+renesas@...ge.net.au>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/video/backlight/pwm_bl.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -301,14 +301,14 @@ static int pwm_backlight_probe(struct pl
 
 	/*
 	 * 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");