gpio: davinci: fix check for unbanked gpio

This patch fixes a check for offset in gpio_to_irq_unbanked()
and also assigns gpio_irq, gpio_unbanked of chips[0] to
appropriate values which is used in gpio_to_irq_unbanked()
function.

Without this patch, unbanked IRQ handling is broken.

Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 8847adf392b7..84be70157ad6 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -327,7 +327,7 @@ static int gpio_to_irq_unbanked(struct gpio_chip *chip, unsigned offset)
          * NOTE:  we assume for now that only irqs in the first gpio_chip
          * can provide direct-mapped IRQs to AINTC (up to 32 GPIOs).
          */
-        if (offset < d->irq_base)
+        if (offset < d->gpio_unbanked)
                 return d->gpio_irq + offset;
         else
                 return -ENODEV;
@@ -419,6 +419,8 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
 
                 /* pass "bank 0" GPIO IRQs to AINTC */
                 chips[0].chip.to_irq = gpio_to_irq_unbanked;
+                chips[0].gpio_irq = bank_irq;
+                chips[0].gpio_unbanked = pdata->gpio_unbanked;
                 binten = BIT(0);
 
                 /* AINTC handles mask/unmask; GPIO handles triggering */