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[PATCH 4.4 81/83] spmi: Include OF based modalias in device uevent

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  [PATCH 4.4 81/83] spmi: Include OF based modalias in device uevent Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 22:50 +0200

#1696407 — [PATCH 4.4 81/83] spmi: Include OF based modalias in device uevent

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bjorn Andersson <bjorn.andersson@linaro.org>

commit d50daa2af2618dab6d21634e65a5fbcf4ae437d6 upstream.

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 <robdclark@gmail.com>
Reported-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/spmi/spmi.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/drivers/spmi/spmi.c
+++ b/drivers/spmi/spmi.c
@@ -364,11 +364,23 @@ static int spmi_drv_remove(struct device
 	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,
 };
 
 /**

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