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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 <stefan@herbrechtsmeier.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Michal Simek 6 年之前
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共有 1 个文件被更改,包括 2 次插入2 次删除
  1. 2 2
      drivers/gpio/xilinx_gpio.c

+ 2 - 2
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;
 }