From 3f13b6a24f192da3096389b82202f16eff2c11ee Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Wed, 12 Jul 2017 13:22:29 +0200 Subject: [PATCH] gpio: mvebu: Fix cause computation in irq handler When switching to regmap, the way to compute the irq cause was reorganized. However while doing it, a typo was introduced: a 'xor' replaced a 'and'. This lead to wrong behavior in the interrupt handler ans one of the symptom was wrong irq handler called on the Armada 388 GP: "->handle_irq(): c016303c, handle_bad_irq+0x0/0x278 ->irq_data.chip(): c0b0ec0c, 0xc0b0ec0c ->action(): (null) IRQ_NOPROBE set IRQ_NOREQUEST set unexpected IRQ trap at vector 00 irq 0, desc: ee804800, depth: 1, count: 0, unhandled: 0" Fixes: 2233bf7a92e7 ("gpio: mvebu: switch to regmap for register access") Signed-off-by: Gregory CLEMENT Signed-off-by: Linus Walleij --- drivers/gpio/gpio-mvebu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index e338c3743562..45c65f805fd6 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -557,7 +557,7 @@ static void mvebu_gpio_irq_handler(struct irq_desc *desc) edge_cause = mvebu_gpio_read_edge_cause(mvchip); edge_mask = mvebu_gpio_read_edge_mask(mvchip); - cause = (data_in ^ level_mask) | (edge_cause & edge_mask); + cause = (data_in & level_mask) | (edge_cause & edge_mask); for (i = 0; i < mvchip->chip.ngpio; i++) { int irq;