Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Geert Uytterhoeven <geert+renesas@glider.be>
To:     Vignesh Raghavendra <vigneshr@ti.com>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Richard Weinberger <richard@nod.at>,
        Sergey Shtylyov <s.shtylyov@omp.ru>
Cc:     Wolfram Sang <wsa+renesas@sang-engineering.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
        Biju Das <biju.das.jz@bp.renesas.com>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        linux-renesas-soc@vger.kernel.org, linux-mtd@lists.infradead.org,
        linux-kernel@vger.kernel.org,
        Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH v2] mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path
Date:   Fri, 17 Jun 2022 11:26:51 +0200
Message-Id: <f3070e1af480cb252ae183d479a593dbbf947685.1655457790.git.geert+renesas@glider.be>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

If rpcif_hw_init() fails, Runtime PM is left enabled.

Fixes: b04cc0d912eb80d3 ("memory: renesas-rpc-if: Add support for RZ/G2L")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v2:
  - Add Reviewed-by.
---
 drivers/mtd/hyperbus/rpc-if.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/hyperbus/rpc-if.c b/drivers/mtd/hyperbus/rpc-if.c
index 6e08ec1d4f098c80..b70d259e48a7c728 100644
--- a/drivers/mtd/hyperbus/rpc-if.c
+++ b/drivers/mtd/hyperbus/rpc-if.c
@@ -134,7 +134,7 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 
 	error = rpcif_hw_init(&hyperbus->rpc, true);
 	if (error)
-		return error;
+		goto out_disable_rpm;
 
 	hyperbus->hbdev.map.size = hyperbus->rpc.size;
 	hyperbus->hbdev.map.virt = hyperbus->rpc.dirmap;
@@ -145,8 +145,12 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 	hyperbus->hbdev.np = of_get_next_child(pdev->dev.parent->of_node, NULL);
 	error = hyperbus_register_device(&hyperbus->hbdev);
 	if (error)
-		rpcif_disable_rpm(&hyperbus->rpc);
+		goto out_disable_rpm;
+
+	return 0;
 
+out_disable_rpm:
+	rpcif_disable_rpm(&hyperbus->rpc);
 	return error;
 }
 
-- 
2.25.1