diff mbox series

[5.8,73/85] pinctrl: mediatek: check mtk_is_virt_gpio input parameter

Message ID 20201005142118.242854830@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Oct. 5, 2020, 3:27 p.m. UTC 
From: Hanks Chen <hanks.chen@mediatek.com>

[ Upstream commit 39c4dbe4cc363accd676162c24b264f44c581490 ]

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")
Signed-off-by: Hanks Chen <hanks.chen@mediatek.com>
Acked-by: Sean Wang <sean.wang@kernel.org>
Singed-off-by: Jie Yang <sin_jieyang@mediatek.com>
Link: https://lore.kernel.org/r/1597922546-29633-1-git-send-email-hanks.chen@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index 2f3dfb56c3fa4..35bbe59357088 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;