mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path

[PATCH v2] mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path

Posted by Geert Uytterhoeven 3 years, 10 months ago

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

Re: [PATCH v2] mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path

Posted by miquel.raynal@bootlin.com 3 years, 10 months ago

From: Miquel Raynal <miquel.raynal@bootlin.com>

On Fri, 2022-06-17 at 09:26:51 UTC, Geert Uytterhoeven wrote:
> 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>
> Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks.

Miquel

Re: [PATCH v2] mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path

Posted by Sergey Shtylyov 3 years, 10 months ago

Hello!

On 6/17/22 12:26 PM, Geert Uytterhoeven wrote:

> 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>

Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>

[...]

MBR, Sergey