[PATCH 2/5] gpio: dwapb: use irq_linear_revmap() for the faster lookup

[Sebastian Andrzej Siewior]

According to irq_linear_revmap() comment, it is slightly faster compared
to irq_find_mapping() since we don't use a radix tree but a linear
mapping.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
 drivers/gpio/gpio-dwapb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 4d25a06b..541b893 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -92,7 +92,7 @@ static void dwapb_irq_handler(u32 irq, struct irq_desc *desc)
 
 	while (irq_status) {
 		int hwirq = fls(irq_status) - 1;
-		int gpio_irq = irq_find_mapping(gpio->domain, hwirq);
+		int gpio_irq = irq_linear_revmap(gpio->domain, hwirq);
 
 		generic_handle_irq(gpio_irq);
 		irq_status &= ~BIT(hwirq);
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/