From: "hongkun.cao" <hongkun.cao@xxxxxxxxxxxx>
This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 5edf673d07fdcb6498be24914f3f38f8d8843199 ]
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@xxxxxxxxxxxxxxx
Signed-off-by: Hongkun Cao <hongkun.cao@xxxxxxxxxxxx>
Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
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 de08175..d32a72e 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -1030,9 +1030,10 @@ static void mtk_eint_irq_handler(unsigned irq, 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;
--
2.5.0
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