From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Thompson Date: Mon, 15 Jan 2018 10:13:23 +0000 Subject: Re: [PATCH 3/3] backlight: pwm_bl: don't use GPIOF_* with gpiod_get_direction Message-Id: <55b3506a-9192-1b36-9c2a-38ec8502514a@linaro.org> List-Id: References: <20180114210711.13863-1-wsa+renesas@sang-engineering.com> <20180114210711.13863-4-wsa+renesas@sang-engineering.com> In-Reply-To: <20180114210711.13863-4-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Wolfram Sang , linux-gpio@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Thierry Reding , Lee Jones , Jingoo Han , Bartlomiej Zolnierkiewicz , linux-pwm@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org On 14/01/18 21:07, Wolfram Sang wrote: > 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 Acked-by: Daniel Thompson > --- > Only build tested! > > drivers/video/backlight/pwm_bl.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c > index 1c2289ddd555a6..0fa7d2bd0e4811 100644 > --- a/drivers/video/backlight/pwm_bl.c > +++ b/drivers/video/backlight/pwm_bl.c > @@ -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"); >