[PATCH] gpio/sifive: fix static checker warning

[Yash Shah <yash.shah@xxxxxxxxxx>]

Typcasting "irq_state" leads to the below static checker warning:
The fix is to declare "irq_state" as unsigned long instead of u32.

	drivers/gpio/gpio-sifive.c:97 sifive_gpio_irq_enable()
	warn: passing casted pointer '&chip->irq_state' to
	'assign_bit()' 32 vs 64.

Fixes: 96868dce644d ("gpio/sifive: Add GPIO driver for SiFive SoCs")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Yash Shah <yash.shah@xxxxxxxxxx>
---
 drivers/gpio/gpio-sifive.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
index 147a1bd..c54dd08 100644
--- a/drivers/gpio/gpio-sifive.c
+++ b/drivers/gpio/gpio-sifive.c
@@ -35,7 +35,7 @@ struct sifive_gpio {
 	void __iomem		*base;
 	struct gpio_chip	gc;
 	struct regmap		*regs;
-	u32			irq_state;
+	unsigned long		irq_state;
 	unsigned int		trigger[SIFIVE_GPIO_MAX];
 	unsigned int		irq_parent[SIFIVE_GPIO_MAX];
 };
@@ -94,7 +94,7 @@ static void sifive_gpio_irq_enable(struct irq_data *d)
 	spin_unlock_irqrestore(&gc->bgpio_lock, flags);
 
 	/* Enable interrupts */
-	assign_bit(offset, (unsigned long *)&chip->irq_state, 1);
+	assign_bit(offset, &chip->irq_state, 1);
 	sifive_gpio_set_ie(chip, offset);
 }
 
@@ -104,7 +104,7 @@ static void sifive_gpio_irq_disable(struct irq_data *d)
 	struct sifive_gpio *chip = gpiochip_get_data(gc);
 	int offset = irqd_to_hwirq(d) % SIFIVE_GPIO_MAX;
 
-	assign_bit(offset, (unsigned long *)&chip->irq_state, 0);
+	assign_bit(offset, &chip->irq_state, 0);
 	sifive_gpio_set_ie(chip, offset);
 	irq_chip_disable_parent(d);
 }
-- 
2.7.4