[PATCH v6 2/2] staging: ion: create one device entry per heap

[Jordan Crouse]

On Mon, Oct 23, 2017 at 05:55:37PM +0200, Benjamin Gaignard wrote:
> Instead a getting only one common device "/dev/ion" for
> all the heaps this patch allow to create one device
> entry ("/dev/ionX") per heap.
> Getting an entry per heap could allow to set security rules
> per heap and global ones for all heaps.
> 
> Allocation requests will be only allowed if the mask_id
> match with device minor.
> Query request could be done on any of the devices.
> 
> Ion devices are parentless so it is need to add platform_bus as
> parent and platform_bus_type as bus to be put in /sys/device/paltform.

nit: paltform -> platform.

Jordan

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