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pinctrl: st: Fix irqmux handler 

st_gpio_irqmux_handler() reads the status register to find out
which banks inside the controller have pending IRQs.
For each banks having pending IRQs, it calls the corresponding handler.

Problem is that current code restricts the number of possible banks inside the
controller to ST_GPIO_PINS_PER_BANK. This define represents the number of pins
inside a bank, so it shouldn't be used here.

On STiH407, PIO_FRONT0 controller has 10 banks, so IRQs pending in the two
last banks (PIO18 & PIO19) aren't handled.

This patch replace ST_GPIO_PINS_PER_BANK by the number of banks inside the
controller.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: <stable@vger.kernel.org> #v3.15+
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Maxime COQUELIN 2014-06-20 13:34:54 +02:00 committed by Linus Walleij
parent 1795cd9b3a
commit 7a2deccf0e
1 changed files with 1 additions and 1 deletions
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2
drivers/pinctrl/pinctrl-st.c
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@ -1431,7 +1431,7 @@ static void st_gpio_irqmux_handler(unsigned irq, struct irq_desc *desc)
status = readl(info->irqmux_base);
for_each_set_bit(n, &status, ST_GPIO_PINS_PER_BANK)
for_each_set_bit(n, &status, info->nbanks)
__gpio_irq_handler(&info->banks[n]);
chained_irq_exit(chip, desc);