5.15-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan+linaro@kernel.org
commit e2349da0fa7ca822cda72f427345b95795358fe7 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: 8def929c4097 ("clk: qcom: Add modem clock controller driver for SC7180") Cc: stable@vger.kernel.org # 5.7 Cc: Taniya Das quic_tdas@quicinc.com Signed-off-by: Johan Hovold johan+linaro@kernel.org Link: https://lore.kernel.org/r/20230718132902.21430-8-johan+linaro@kernel.org Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/clk/qcom/mss-sc7180.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
--- a/drivers/clk/qcom/mss-sc7180.c +++ b/drivers/clk/qcom/mss-sc7180.c @@ -87,11 +87,22 @@ static int mss_sc7180_probe(struct platf return ret; }
+ ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) + return ret; + ret = qcom_cc_probe(pdev, &mss_sc7180_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 mss_sc7180_pm_ops = {