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clk: qcom: turingcc-qcs404: fix missing resume during probe

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commit a9f71a0335 upstream.

Drivers that enable runtime PM must make sure that the controller is
runtime resumed before accessing its registers to prevent the power
domain from being disabled.

Fixes: 892df0191b ("clk: qcom: Add QCS404 TuringCC")
Cc: stable@vger.kernel.org      # 5.2
Cc: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230718132902.21430-9-johan+linaro@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2023-07-18 15:29:02 +02:00 committed by Greg Kroah-Hartman
parent 9f5db4ab19
commit 2d8138cea7
1 changed files with 13 additions and 2 deletions
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15
drivers/clk/qcom/turingcc-qcs404.c
View file

@ -124,11 +124,22 @@ static int turingcc_probe(struct platform_device *pdev)
return ret;
}
ret = qcom_cc_probe(pdev, &turingcc_desc);
if (ret < 0)
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret)
return ret;
ret = qcom_cc_probe(pdev, &turingcc_desc);
if (ret < 0)
goto err_put_rpm;
pm_runtime_put(&pdev->dev);
return 0;
err_put_rpm:
pm_runtime_put_sync(&pdev->dev);
return ret;
}
static const struct dev_pm_ops turingcc_pm_ops = {