From 5edf673d07fdcb6498be24914f3f38f8d8843199 Mon Sep 17 00:00:00 2001 From: "hongkun.cao" Date: Sat, 21 May 2016 15:23:39 +0800 Subject: [PATCH] pinctrl: mediatek: fix dual-edge code defect 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. Cc: stable@vger.kernel.org Signed-off-by: Hongkun Cao Reviewed-by: Matthias Brugger Signed-off-by: Linus Walleij --- drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c index 207b13b618cf..a607655d7830 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c @@ -1256,9 +1256,10 @@ static void mtk_eint_irq_handler(struct irq_desc *desc) const struct mtk_desc_pin *pin; 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); - reg += 4; while (status) { offset = __ffs(status); index = eint_num + offset;