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From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Rob Herring <robh+dt@kernel.org>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Richard Weinberger <richard@nod.at>,
        Mark Brown <broonie@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Sergei Shtylyov <sergei.shtylyov@gmail.com>,
        devicetree@vger.kernel.org, linux-mtd@lists.infradead.org,
        linux-spi@vger.kernel.org,
        Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc:     linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
        Prabhakar <prabhakar.csengg@gmail.com>,
        Biju Das <biju.das.jz@bp.renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [PATCH 4/6] mtd: hyperbus: rpc-if: Check return value of rpcif_sw_init()
Date:   Tue, 28 Sep 2021 15:07:19 +0100
Message-Id: <20210928140721.8805-5-prabhakar.mahadev-lad.rj@bp.renesas.com>
In-Reply-To: <20210928140721.8805-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
References: <20210928140721.8805-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Precedence: bulk

rpcif_sw_init() can fail so make sure we check the return value
of it and on error exit rpcif_hb_probe() callback with error code.

Fixes: 5de15b610f78 ("mtd: hyperbus: add Renesas RPC-IF driver")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/mtd/hyperbus/rpc-if.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/hyperbus/rpc-if.c b/drivers/mtd/hyperbus/rpc-if.c
index ecb050ba95cd..367b0d72bf62 100644
--- a/drivers/mtd/hyperbus/rpc-if.c
+++ b/drivers/mtd/hyperbus/rpc-if.c
@@ -124,7 +124,9 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 	if (!hyperbus)
 		return -ENOMEM;
 
-	rpcif_sw_init(&hyperbus->rpc, pdev->dev.parent);
+	error = rpcif_sw_init(&hyperbus->rpc, pdev->dev.parent);
+	if (error)
+		return error;
 
 	platform_set_drvdata(pdev, hyperbus);
 
-- 
2.17.1