4.14-stable review patch. If anyone has any objections, please let me know.
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From: Haibo Chen haibo.chen@nxp.com
commit fc363413ef8ea842ae7a99e3caf5465dafdd3a49 upstream.
We found a glitch when configuring the pad as output high. To avoid this glitch, move the data value setting before direction config in the function vf610_gpio_direction_output().
Fixes: 659d8a62311f ("gpio: vf610: add imx7ulp support") Signed-off-by: Haibo Chen haibo.chen@nxp.com [Bartosz: tweak the commit message] Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpio/gpio-vf610.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -137,14 +137,14 @@ static int vf610_gpio_direction_output(s unsigned long mask = BIT(gpio); u32 val;
+ vf610_gpio_set(chip, gpio, value); + if (port->sdata && port->sdata->have_paddr) { val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR); val |= mask; vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR); }
- vf610_gpio_set(chip, gpio, value); - return pinctrl_gpio_direction_output(chip->base + gpio); }