pinctrl: SPEAr: Update error check for unsigned variables

Checking '< 0' for unsigned variables always returns false. For error
codes, use IS_ERR_VALUE() instead.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/pinctrl/spear/pinctrl-plgpio.c b/drivers/pinctrl/spear/pinctrl-plgpio.c
index 5aebbf780fb5..4c045053bbdd 100644
--- a/drivers/pinctrl/spear/pinctrl-plgpio.c
+++ b/drivers/pinctrl/spear/pinctrl-plgpio.c
@@ -284,7 +284,7 @@ static int plgpio_to_irq(struct gpio_chip *chip, unsigned offset)
 {
         struct plgpio *plgpio = container_of(chip, struct plgpio, chip);
 
-        if (plgpio->irq_base < 0)
+        if (IS_ERR_VALUE(plgpio->irq_base))
                 return -EINVAL;
 
         return irq_find_mapping(plgpio->irq_domain, offset);