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: f436bc2726c6 "gpio: add driver for MEN 16Z127 GPIO controller"
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-menz127.c b/drivers/gpio/gpio-menz127.c
index a68e199..c5c9599 100644 (file)
--- a/drivers/gpio/gpio-menz127.c
+++ b/drivers/gpio/gpio-menz127.c
@@ -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;
 }