On do, 2015-07-16 at 13:55 +0100, Mark Brown wrote:
No, in that case you've not understood what the MODULE_ALIAS is for. It's there so that userspace knows which module to load if it gets a device with no driver, it goes in the driver not in the code registering the device.
That's exactly how I understood MODULE_ALIAS() to work.
And it works, in short, because a platform device fires a "MODALIAS=platform:[...]" uevent when it's created. And userspace uses that uevent to load the module carrying that alias.
Let's put it this was. If one does sudo find /sys -perm -o=r -name uevent -exec grep -H MODALIAS=platform: {} ;
or sudo find /sys -perm -o=r -name modalias -exec grep -H platform: {} ;
(both lists should be similar)
on the systems this patch is targeting, will platform:rockchip-snd-max98090
then show up?
Thanks,
Paul Bolle