Accessing rpmsg_device in sysfs attribute functions

Greg KH greg at
Tue Mar 24 06:23:49 EDT 2020

On Tue, Mar 24, 2020 at 10:49:46AM +0100, Martin Kaiser wrote:
> Hi Greg,
> Thus wrote Greg KH (greg at
> > That is because you have created a driver attribute, not a device
> > attribute.  Create device attributes and you should be fine, they bind
> > to the device your driver is passed.
> could you point me to an example in the kernel tree where this is done
> correctly for a platform device?
> I had a look at
> but I couldn't figure out how to create device attributes in a simple
> platform driver that binds to a platform device.

Look at commit d99995a4f0f1 ("Input: axp20x-pek - convert driver to use
dev_groups") in the 5.4 kernel as an example of how to use the correct
api here.

Hope this helps,

greg k-h

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