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: 892df0191b29 ("clk: qcom: Add QCS404 TuringCC")
Cc: stable@xxxxxxxxxxxxxxx # 5.2
Cc: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
---
drivers/clk/qcom/turingcc-qcs404.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/qcom/turingcc-qcs404.c b/drivers/clk/qcom/turingcc-qcs404.c
index 43184459228f..2cd288d6c3e4 100644
--- a/drivers/clk/qcom/turingcc-qcs404.c
+++ b/drivers/clk/qcom/turingcc-qcs404.c
@@ -125,11 +125,22 @@ static int turingcc_probe(struct platform_device *pdev)
return ret;
}
+ ret = pm_runtime_resume_and_get(&pdev->dev);
+ if (ret)
+ return ret;
+
ret = qcom_cc_probe(pdev, &turingcc_desc);
if (ret < 0)
- return ret;
+ 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 = {
--
2.41.0
