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: 4ab43d171181 ("clk: qcom: Add lpass clock controller driver for SC7280") Cc: stable@vger.kernel.org # 5.16 Cc: Taniya Das quic_tdas@quicinc.com Signed-off-by: Johan Hovold johan+linaro@kernel.org --- drivers/clk/qcom/lpasscc-sc7280.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/qcom/lpasscc-sc7280.c b/drivers/clk/qcom/lpasscc-sc7280.c index 0df2b29e95e3..e6b815aec46a 100644 --- a/drivers/clk/qcom/lpasscc-sc7280.c +++ b/drivers/clk/qcom/lpasscc-sc7280.c @@ -118,9 +118,13 @@ static int lpass_cc_sc7280_probe(struct platform_device *pdev) ret = pm_clk_add(&pdev->dev, "iface"); if (ret < 0) { dev_err(&pdev->dev, "failed to acquire iface clock\n"); - goto destroy_pm_clk; + goto err_destroy_pm_clk; }
+ ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) + goto err_destroy_pm_clk; + if (!of_property_read_bool(pdev->dev.of_node, "qcom,adsp-pil-mode")) { lpass_regmap_config.name = "qdsp6ss"; lpass_regmap_config.max_register = 0x3f; @@ -128,7 +132,7 @@ static int lpass_cc_sc7280_probe(struct platform_device *pdev)
ret = qcom_cc_probe_by_index(pdev, 0, desc); if (ret) - goto destroy_pm_clk; + goto err_put_rpm; }
lpass_regmap_config.name = "top_cc"; @@ -137,11 +141,15 @@ static int lpass_cc_sc7280_probe(struct platform_device *pdev)
ret = qcom_cc_probe_by_index(pdev, 1, desc); if (ret) - goto destroy_pm_clk; + goto err_put_rpm; + + pm_runtime_put(&pdev->dev);
return 0;
-destroy_pm_clk: +err_put_rpm: + pm_runtime_put_sync(&pdev->dev); +err_destroy_pm_clk: pm_clk_destroy(&pdev->dev);
return ret;