From eb3288992864616b66e6442fecfba9e3474e42c5 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Fri, 27 Oct 2017 21:21:48 +0100 Subject: gpio: mb86s70: Revert "Return error if requesting an already assigned gpio" Commit fd9c963c5661 ("gpio: mb86s70: Return error if requesting an already assigned gpio") adds code that infers from the state of the GPIO Pin Function Register (PFR) whether a GPIO has been assigned already. This assumes that the pin functions are set to 'peripheral' when the driver is loaded, which is not guaranteed. Also, the GPIO layer is perfectly capable of keeping track of which GPIOs have been assigned already, so we shouldn't need this check in the first place. This reverts commit fd9c963c5661af3403e77e312c0d9941773b6c1b. Cc: Axel Lin Signed-off-by: Ard Biesheuvel Acked-by: Axel Lin Signed-off-by: Linus Walleij --- drivers/gpio/gpio-mb86s7x.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers/gpio') diff --git a/drivers/gpio/gpio-mb86s7x.c b/drivers/gpio/gpio-mb86s7x.c index b140806bded3..3134c0d2bfe4 100644 --- a/drivers/gpio/gpio-mb86s7x.c +++ b/drivers/gpio/gpio-mb86s7x.c @@ -53,11 +53,6 @@ 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)); -- cgit