linux-kernel - [PATCH 4.9 28/92] pinctrl: meson: fix pinconf bias disable

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Message-Id: <20181129140108.655115733@linuxfoundation.org>
Date:   Thu, 29 Nov 2018 15:11:57 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jerome Brunet <jbrunet@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 28/92] pinctrl: meson: fix pinconf bias disable

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit e39f9dd8206ad66992ac0e6218ef1ba746f2cce9 ]

If a bias is enabled on a pin of an Amlogic SoC, calling .pin_config_set()
with PIN_CONFIG_BIAS_DISABLE will not disable the bias. Instead it will
force a pull-down bias on the pin.

Instead of the pull type register bank, the driver should access the pull
enable register bank.

Fixes: 6ac730951104 ("pinctrl: add driver for Amlogic Meson SoCs")
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
Acked-by: Neil Armstrong <narmstrong@...libre.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/meson/pinctrl-meson.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 9443c9d408c6..df61a71420b1 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -275,7 +275,7 @@ static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin,
 			dev_dbg(pc->dev, "pin %u: disable bias\n", pin);
 
 			meson_calc_reg_and_bit(bank, pin, REG_PULL, &reg, &bit);
-			ret = regmap_update_bits(pc->reg_pull, reg,
+			ret = regmap_update_bits(pc->reg_pullen, reg,
 						 BIT(bit), 0);
 			if (ret)
 				return ret;
-- 
2.17.1