From bf2a69de81908f36a5853b36cc2afbd976856e3b Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 30 Jul 2018 10:02:53 +0200 Subject: [PATCH] gpio: xilinx: Set value before changing direction Set a value before changing gpio direction. This will ensure that the old value is not propagated when direction has changed but new value is not written yet. Reported-by: Stefan Herbrechtsmeier Signed-off-by: Michal Simek Reviewed-by: Stefan Herbrechtsmeier --- drivers/gpio/xilinx_gpio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/xilinx_gpio.c b/drivers/gpio/xilinx_gpio.c index 776a147cc8..1e5f3da8d7 100644 --- a/drivers/gpio/xilinx_gpio.c +++ b/drivers/gpio/xilinx_gpio.c @@ -139,14 +139,14 @@ static int xilinx_gpio_direction_output(struct udevice *dev, unsigned offset, if (platdata->bank_input[bank]) return -EINVAL; + xilinx_gpio_set_value(dev, offset, value); + if (!platdata->bank_output[bank]) { val = readl(&platdata->regs->gpiodir + bank * 2); val = val & ~(1 << pin); writel(val, &platdata->regs->gpiodir + bank * 2); } - xilinx_gpio_set_value(dev, offset, value); - return 0; } -- 2.39.5