quoted

quoted

@@ -665,6 +659,14 @@ static int __maybe_unused

lpi2c_runtime_resume(struct device *dev)
 		dev_err(dev, "can't enable I2C ipg clock, ret=%d\n", ret);
 	}

+	ret = devm_request_irq(dev, lpi2c_imx->irq, lpi2c_imx_isr,

I guess unnecessary to use devm in rpm

devm_request_irq() will use device resource management.
Other resource like clk and struct space are all managed by devres.
Maybe we can still use devm_ to let devres manage irq here?

devm_xxx is usually used to auto free resources when probe fail,
driver unbound / device unregister and etc. Not for runtime pm.
I may prefer using request_irq/free_irq directly in runtime.

BTW, current lpi2c_imx_remove seems didn't ensure the device is
In runtime suspend state after removing.
If framework can't guarantee, the driver has to do it.
Anyway, that's another issue and need a separate patch.

Regards
Aisheng

Thanks.

Best Regards,
Clark Wang

quoted

quoted

+			       IRQF_NO_SUSPEND,
+			       dev_name(dev), lpi2c_imx);
+	if (ret) {
+		dev_err(dev, "can't claim irq %d\n", lpi2c_imx->irq);
+		return ret;
+	}
+
 	return ret;
 }

--
2.25.1

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