From b9fab6e45d2d41de5495f7d40808e9e131652f92 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 31 Jan 2013 09:45:17 +0000 Subject: pinctrl/abx500: align GPIO cluster boundaries Not quite sure how this ever worked. In ab8500_gpio_to_irq() the GPIO for conversion is passed through as the second argument. If GPIO13, which is a valid GPIO for IRQ functionality, was received; it would be rejected by the following guard: GPIO_IRQ_CLUSTER(5, 12, 0); /* GPIO numbers start from 1 */ if (offset >= cluster->start && offset <= cluster->end) /* Valid GPIO for IRQ use */ Signed-off-by: Lee Jones [Augmented to account for off-by-one problem] Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-abx500.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/pinctrl/pinctrl-abx500.c') diff --git a/drivers/pinctrl/pinctrl-abx500.c b/drivers/pinctrl/pinctrl-abx500.c index 9bdfcb97ef57..a9e720ffabfb 100644 --- a/drivers/pinctrl/pinctrl-abx500.c +++ b/drivers/pinctrl/pinctrl-abx500.c @@ -272,6 +272,8 @@ static int abx500_gpio_direction_input(struct gpio_chip *chip, unsigned offset) static int abx500_gpio_to_irq(struct gpio_chip *chip, unsigned offset) { struct abx500_pinctrl *pct = to_abx500_pinctrl(chip); + /* The AB8500 GPIO numbers are off by one */ + int gpio = offset + 1; int base = pct->irq_base; int i; @@ -279,8 +281,8 @@ static int abx500_gpio_to_irq(struct gpio_chip *chip, unsigned offset) struct abx500_gpio_irq_cluster *cluster = &pct->irq_cluster[i]; - if (offset >= cluster->start && offset <= cluster->end) - return base + offset - cluster->start; + if (gpio >= cluster->start && gpio <= cluster->end) + return base + gpio - cluster->start; /* Advance by the number of gpios in this cluster */ base += cluster->end + cluster->offset - cluster->start + 1; -- cgit v1.2.3