spmi: Include OF based modalias in device uevent

andersson · gregkh · commit d50daa2af261 · 2017-07-17T15:00:47.000+02:00
Include the OF-based modalias in the uevent sent when registering SPMI
devices, so that user space has a chance to autoload the kernel module
for the device.

Tested-by: Rob Clark &lt;robdclark@gmail.com&gt;
Reported-by: Rob Clark &lt;robdclark@gmail.com&gt;
Reviewed-by: Stephen Boyd &lt;sboyd@codeaurora.org&gt;
Signed-off-by: Bjorn Andersson &lt;bjorn.andersson@linaro.org&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
@@ -365,11 +365,23 @@ static int spmi_drv_remove(struct device *dev)
 	return 0;
 }
 
+static int spmi_drv_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	int ret;
+
+	ret = of_device_uevent_modalias(dev, env);
+	if (ret != -ENODEV)
+		return ret;
+
+	return 0;
+}
+
 static struct bus_type spmi_bus_type = {
 	.name		= "spmi",
 	.match		= spmi_device_match,
 	.probe		= spmi_drv_probe,
 	.remove		= spmi_drv_remove,
+	.uevent		= spmi_drv_uevent,
 };
 
 /**
