linux-kernel - [PATCH AUTOSEL 4.14 1/3] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to

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Message-Id: <20201117125753.600073-1-sashal@kernel.org>
Date:   Tue, 17 Nov 2020 07:57:51 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Jianqun Xu <jay.xu@...k-chips.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Kever Yang <kever.yang@...k-chips.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <sashal@...nel.org>, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.14 1/3] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq

From: Jianqun Xu <jay.xu@...k-chips.com>

[ Upstream commit 63fbf8013b2f6430754526ef9594f229c7219b1f ]

There need to enable pclk_gpio when do irq_create_mapping, since it will
do access to gpio controller.

Signed-off-by: Jianqun Xu <jay.xu@...k-chips.com>
Reviewed-by: Heiko Stuebner <heiko@...ech.de>
Reviewed-by: Kever Yang<kever.yang@...k-chips.com>
Link: https://lore.kernel.org/r/20201013063731.3618-3-jay.xu@rock-chips.com
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/pinctrl-rockchip.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 5d6cf024ee9c8..26974973ecdde 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -2547,7 +2547,9 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
 	if (!bank->domain)
 		return -ENXIO;
 
+	clk_enable(bank->clk);
 	virq = irq_create_mapping(bank->domain, offset);
+	clk_disable(bank->clk);
 
 	return (virq) ? : -ENXIO;
 }
-- 
2.27.0