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Commit fd975a7b authored by Axel Lin's avatar Axel Lin Committed by Linus Walleij
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gpio: menz127: Drop lock field from struct men_z127_gpio 



Current code uses a uninitialized spin lock.
bgpio_init() already initialized a spin lock, so let's switch to use
&gc->bgpio_lock instead and remove the lock from struct men_z127_gpio.

Fixes: f436bc27 "gpio: add driver for MEN 16Z127 GPIO controller"
Signed-off-by: default avatarAxel Lin <axel.lin@ingics.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent f55532a0

drivers/gpio/gpio-menz127.c

+4 −5
Original line number Diff line number Diff line
@@ -37,7 +37,6 @@ struct men_z127_gpio { 
	void __iomem *reg_base;

	struct mcb_device *mdev;

	struct resource *mem;

	spinlock_t lock;

};



static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio,
@@ -69,7 +68,7 @@ static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio, 
		debounce /= 50;

	}



	spin_lock(&priv->lock);

	spin_lock(&gc->bgpio_lock);



	db_en = readl(priv->reg_base + MEN_Z127_DBER);
@@ -84,7 +83,7 @@ static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio, 
	writel(db_en, priv->reg_base + MEN_Z127_DBER);

	writel(db_cnt, priv->reg_base + GPIO_TO_DBCNT_REG(gpio));



	spin_unlock(&priv->lock);

	spin_unlock(&gc->bgpio_lock);



	return 0;

}
@@ -97,7 +96,7 @@ static int men_z127_request(struct gpio_chip *gc, unsigned gpio_pin) 
	if (gpio_pin >= gc->ngpio)

		return -EINVAL;



	spin_lock(&priv->lock);

	spin_lock(&gc->bgpio_lock);

	od_en = readl(priv->reg_base + MEN_Z127_ODER);



	if (gpiochip_line_is_open_drain(gc, gpio_pin))
@@ -106,7 +105,7 @@ static int men_z127_request(struct gpio_chip *gc, unsigned gpio_pin) 
		od_en &= ~BIT(gpio_pin);



	writel(od_en, priv->reg_base + MEN_Z127_ODER);

	spin_unlock(&priv->lock);

	spin_unlock(&gc->bgpio_lock);



	return 0;

}