linux-kernel - [PATCH v2 3/5] clk: imx: imx8: Fix an error handling path in imx8_acm_clk

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Date:   Thu, 14 Sep 2023 22:31:04 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     abelvesa@...nel.org, peng.fan@....com, mturquette@...libre.com,
        sboyd@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        shengjiu.wang@....com
Cc:     linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH v2 3/5] clk: imx: imx8: Fix an error handling path in imx8_acm_clk_probe()

If an error occurs after a successful clk_imx_acm_attach_pm_domains() call,
it must be undone.

Add an explicit error handling path, re-order the code and add the missing
clk_imx_acm_detach_pm_domains() call.

Fixes: d3a0946d7ac9 ("clk: imx: imx8: add audio clock mux driver")
Reviewed-by: Peng Fan <peng.fan@....com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/clk/imx/clk-imx8-acm.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/imx/clk-imx8-acm.c b/drivers/clk/imx/clk-imx8-acm.c
index 73b3b5354951..1c95ae905eec 100644
--- a/drivers/clk/imx/clk-imx8-acm.c
+++ b/drivers/clk/imx/clk-imx8-acm.c
@@ -374,7 +374,6 @@ static int imx8_acm_clk_probe(struct platform_device *pdev)
 										0, NULL, NULL);
 		if (IS_ERR(hws[sels[i].clkid])) {
 			ret = PTR_ERR(hws[sels[i].clkid]);
-			pm_runtime_disable(&pdev->dev);
 			goto err_clk_register;
 		}
 	}
@@ -384,12 +383,16 @@ static int imx8_acm_clk_probe(struct platform_device *pdev)
 	ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_hw_data);
 	if (ret < 0) {
 		dev_err(dev, "failed to register hws for ACM\n");
-		pm_runtime_disable(&pdev->dev);
+		goto err_clk_register;
 	}
 
-err_clk_register:
+	pm_runtime_put_sync(&pdev->dev);
+	return 0;
 
+err_clk_register:
 	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+	clk_imx_acm_detach_pm_domains(&pdev->dev, &priv->dev_pm);
 
 	return ret;
 }
-- 
2.34.1