linux-kernel - [PATCH -next] pinctrl: qcom: spmi-mpp: Fix err handling of pmic_mpp_set

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Date:   Thu, 20 Sep 2018 01:58:18 +0000
From:   YueHaibing <yuehaibing@...wei.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>
CC:     YueHaibing <yuehaibing@...wei.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] pinctrl: qcom: spmi-mpp: Fix err handling of pmic_mpp_set_mux

'ret' should be returned while pmic_mpp_write_mode_ctl fails. 

Fixes: 0e948042c420 ("pinctrl: qcom: spmi-mpp: Implement support for sink mode")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/pinctrl/qcom/pinctrl-spmi-mpp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
index 98f6f40..d6ddc47 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
@@ -319,6 +319,8 @@ static int pmic_mpp_set_mux(struct pinctrl_dev *pctldev, unsigned function,
 	pad->function = function;
 
 	ret = pmic_mpp_write_mode_ctl(state, pad);
+	if (ret < 0)
+		return ret;
 
 	val = pad->is_enabled << PMIC_MPP_REG_MASTER_EN_SHIFT;