linux-kernel - [PATCH RESEND] mfd: hi655x-pmic: Fix missing return value check for devm_regmap_init_mmio

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Message-Id: <20190626133007.591-1-axel.lin@ingics.com>
Date:   Wed, 26 Jun 2019 21:30:07 +0800
From:   Axel Lin <axel.lin@...ics.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Chen Feng <puck.chen@...ilicon.com>, linux-kernel@...r.kernel.org,
        Axel Lin <axel.lin@...ics.com>
Subject: [PATCH RESEND] mfd: hi655x-pmic: Fix missing return value check for devm_regmap_init_mmio_clk

Since devm_regmap_init_mmio_clk can fail, add return value checking.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
Acked-by: Chen Feng <puck.chen@...ilicon.com>
---
This was sent on https://lkml.org/lkml/2019/3/6/904

 drivers/mfd/hi655x-pmic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/hi655x-pmic.c b/drivers/mfd/hi655x-pmic.c
index 96c07fa1802a..6693f74aa6ab 100644
--- a/drivers/mfd/hi655x-pmic.c
+++ b/drivers/mfd/hi655x-pmic.c
@@ -112,6 +112,8 @@ static int hi655x_pmic_probe(struct platform_device *pdev)
 
 	pmic->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,
 						 &hi655x_regmap_config);
+	if (IS_ERR(pmic->regmap))
+		return PTR_ERR(pmic->regmap);
 
 	regmap_read(pmic->regmap, HI655X_BUS_ADDR(HI655X_VER_REG), &pmic->ver);
 	if ((pmic->ver < PMU_VER_START) || (pmic->ver > PMU_VER_END)) {
-- 
2.17.1