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From:   Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
To:     Andrew Lunn <andrew@lunn.ch>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>, davem@davemloft.net,
        Ray Jui <rjui@broadcom.com>,
        Scott Branden <sbranden@broadcom.com>,
        bcm-kernel-feedback-list@broadcom.com,
        Arun Parameswaran <arun.parameswaran@broadcom.com>,
        netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org
Cc:     Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Subject: [PATCH v1 1/1] net: phy: mdio-mux-bcm-iproc: check clk_prepare_enable() return value
Date:   Tue, 17 Mar 2020 10:24:35 +0530
Message-Id: <20200317045435.29975-1-rayagonda.kokatanur@broadcom.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Check clk_prepare_enable() return value.

Fixes: 2c7230446bc9 ("net: phy: Add pm support to Broadcom iProc mdio mux driver")
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
---
 drivers/net/phy/mdio-mux-bcm-iproc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio-mux-bcm-iproc.c b/drivers/net/phy/mdio-mux-bcm-iproc.c
index 88d409e48c1f..aad6809ebe39 100644
--- a/drivers/net/phy/mdio-mux-bcm-iproc.c
+++ b/drivers/net/phy/mdio-mux-bcm-iproc.c
@@ -288,8 +288,13 @@ static int mdio_mux_iproc_suspend(struct device *dev)
 static int mdio_mux_iproc_resume(struct device *dev)
 {
 	struct iproc_mdiomux_desc *md = dev_get_drvdata(dev);
+	int rc;
 
-	clk_prepare_enable(md->core_clk);
+	rc = clk_prepare_enable(md->core_clk);
+	if (rc) {
+		dev_err(md->dev, "failed to enable core clk\n");
+		return rc;
+	}
 	mdio_mux_iproc_config(md);
 
 	return 0;
-- 
2.17.1