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pinctrl: mediatek: fix dual-edge code defect

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commit 5edf673d07 upstream.

When a dual-edge irq is triggered, an incorrect irq will be reported on
condition that the external signal is not stable and this incorrect irq
has been registered.
Correct the register offset.

Signed-off-by: Hongkun Cao <hongkun.cao@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
hongkun.cao
2016-05-21 15:23:39 +08:00
committed by Greg Kroah-Hartman
parent a976f62a60
commit b5ff1d6012
1 changed files with 3 additions and 2 deletions
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5
drivers/pinctrl/mediatek/pinctrl-mtk-common.c
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@@ -1191,9 +1191,10 @@ static void mtk_eint_irq_handler(struct irq_desc *desc)
const struct mtk_desc_pin *pin; const struct mtk_desc_pin *pin;
chained_irq_enter(chip, desc); chained_irq_enter(chip, desc);
for (eint_num = 0; eint_num < pctl->devdata->ap_num; eint_num += 32) { for (eint_num = 0;
eint_num < pctl->devdata->ap_num;
eint_num += 32, reg += 4) {
status = readl(reg); status = readl(reg);
reg += 4;
while (status) { while (status) {
offset = __ffs(status); offset = __ffs(status);
index = eint_num + offset; index = eint_num + offset;