arm: omap: gpio: don't access irq_desc array directly

Instead of accessing the irq_desc array directly
we can use irq_to_desc(irq). That will allow us to,
if wanted, select SPARSE_IRQ and irq_descs will be
added to a radix tree, instead of a array.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 60631f2..ccf2660 100644 (file)
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -756,8 +756,10 @@ static int gpio_irq_type(unsigned irq, unsigned type)
        spin_lock_irqsave(&bank->lock, flags);
        retval = _set_gpio_triggering(bank, get_gpio_index(gpio), type);
        if (retval == 0) {
-               irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK;
-               irq_desc[irq].status |= type;
+               struct irq_desc *d = irq_to_desc(irq);
+
+               d->status &= ~IRQ_TYPE_SENSE_MASK;
+               d->status |= type;
        }
        spin_unlock_irqrestore(&bank->lock, flags);
 
@@ -1671,7 +1673,9 @@ static void __init omap_gpio_chip_init(struct gpio_bank *bank)
 
        for (j = bank->virtual_irq_start;
                     j < bank->virtual_irq_start + bank_width; j++) {
-               lockdep_set_class(&irq_desc[j].lock, &gpio_lock_class);
+               struct irq_desc *d = irq_to_desc(j);
+
+               lockdep_set_class(&d->lock, &gpio_lock_class);
                set_irq_chip_data(j, bank);
                if (bank_is_mpuio(bank))
                        set_irq_chip(j, &mpuio_irq_chip);