Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fd9c963c authored by Axel Lin's avatar Axel Lin Committed by Linus Walleij
Browse files

gpio: mb86s70: Return error if requesting an already assigned gpio 



Signed-off-by: default avatarAxel Lin <axel.lin@ingics.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent c517d838

drivers/gpio/gpio-mb86s7x.c

+5 −0
Original line number Diff line number Diff line
@@ -58,6 +58,11 @@ static int mb86s70_gpio_request(struct gpio_chip *gc, unsigned gpio) 
	spin_lock_irqsave(&gchip->lock, flags);



	val = readl(gchip->base + PFR(gpio));

	if (!(val & OFFSET(gpio))) {

		spin_unlock_irqrestore(&gchip->lock, flags);

		return -EINVAL;

	}



	val &= ~OFFSET(gpio);

	writel(val, gchip->base + PFR(gpio));