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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Dan Murphy <dmurphy@ti.com>,
        Marc Kleine-Budde <mkl@pengutronix.de>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.4 083/158] can: tcan4x5x: tcan4x5x_can_probe(): add missing error checking for devm_regmap_init()
Date:   Mon, 23 Nov 2020 13:21:51 +0100
Message-Id: <20201123121823.936901951@linuxfoundation.org>
In-Reply-To: <20201123121819.943135899@linuxfoundation.org>
References: <20201123121819.943135899@linuxfoundation.org>
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From: Marc Kleine-Budde <mkl@pengutronix.de>

[ Upstream commit 1ff203badbbf1738027c8395d5b40b0d462b6e4d ]

This patch adds the missing error checking when initializing the regmap
interface fails.

Fixes: 5443c226ba91 ("can: tcan4x5x: Add tcan4x5x driver to the kernel")
Cc: Dan Murphy <dmurphy@ti.com>
Link: http://lore.kernel.org/r/20201019154233.1262589-7-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/m_can/tcan4x5x.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/can/m_can/tcan4x5x.c b/drivers/net/can/m_can/tcan4x5x.c
index b233756345f83..11c223a534887 100644
--- a/drivers/net/can/m_can/tcan4x5x.c
+++ b/drivers/net/can/m_can/tcan4x5x.c
@@ -467,6 +467,10 @@ static int tcan4x5x_can_probe(struct spi_device *spi)
 
 	priv->regmap = devm_regmap_init(&spi->dev, &tcan4x5x_bus,
 					&spi->dev, &tcan4x5x_regmap);
+	if (IS_ERR(priv->regmap)) {
+		ret = PTR_ERR(priv->regmap);
+		goto out_clk;
+	}
 
 	tcan4x5x_power_enable(priv->power, 1);
 
-- 
2.27.0