[PATCH 3/5] clk: imx: imx8: Fix an error handling path in imx8_acm_clk_probe()

From: Christophe JAILLET
Date: Sun Aug 27 2023 - 05:39:32 EST


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")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
This patch is speculative, review with care.
---
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 0cd9aa3629f3..19914c1d7c39 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