clk: qcom: q6sstop-qcs404: fix missing resume during probe

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: 6cdef2738db0 ("clk: qcom: Add Q6SSTOP clock controller for QCS404")
Cc: stable@vger.kernel.org      # 5.5
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230718132902.21430-7-johan+linaro@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c
index 780074e..26e2d63 100644 (file)
--- a/drivers/clk/qcom/q6sstop-qcs404.c
+++ b/drivers/clk/qcom/q6sstop-qcs404.c
@@ -174,21 +174,32 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
                return ret;
        }
 
+       ret = pm_runtime_resume_and_get(&pdev->dev);
+       if (ret)
+               return ret;
+
        q6sstop_regmap_config.name = "q6sstop_tcsr";
        desc = &tcsr_qcs404_desc;
 
        ret = qcom_cc_probe_by_index(pdev, 1, desc);
        if (ret)
-               return ret;
+               goto err_put_rpm;
 
        q6sstop_regmap_config.name = "q6sstop_cc";
        desc = &q6sstop_qcs404_desc;
 
        ret = qcom_cc_probe_by_index(pdev, 0, desc);
        if (ret)
-               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 q6sstopcc_pm_ops = {