[PATCH v2] pinctrl: mediatek: check mtk_is_virt_gpio input parameter

Hanks Chen
2020-08-20T11:23:04Z

check mtk_is_virt_gpio input parameter,
virtual gpio need to support eint mode.

add error handler for the ko case
to fix this boot fail:
pc : mtk_is_virt_gpio+0x20/0x38 [pinctrl_mtk_common_v2]
lr : mtk_gpio_get_direction+0x44/0xb0 [pinctrl_paris]

Fixes: edd546465002 ("pinctrl: mediatek: avoid virtual gpio trying to set reg")
Singed-off-by: Jie Yang <sin_jieyang@mediatek.com>
Signed-off-by: Hanks Chen <hanks.chen@mediatek.com>

---
Changes since v1:
- update Singed-off-by
- align with pinctrl/mediatek/pinctrl-mtk-mt*.h

---
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index c53e2c391e32..a485d79f51a1 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -259,6 +259,10 @@ bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n)

desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];

+ /* if the GPIO is not supported for eint mode */
+ if (desc->eint.eint_m == NO_EINT_SUPPORT)
+ return virt_gpio;
+
if (desc->funcs && !desc->funcs[desc->eint.eint_m].name)
virt_gpio = true;

--
2.18.0