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mfd: arizona: Fix incorrect Makefile conditionals
[cascardo/linux.git]
/
drivers
/
gpio
/
gpio-mb86s7x.c
diff --git
a/drivers/gpio/gpio-mb86s7x.c
b/drivers/gpio/gpio-mb86s7x.c
index
21b1ce5
..
ee93c0a
100644
(file)
--- a/
drivers/gpio/gpio-mb86s7x.c
+++ b/
drivers/gpio/gpio-mb86s7x.c
@@
-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));