On Tue, Sep 18, 2018 at 04:57:59PM +0200, Michal Simek wrote:

For IPs which have alias algorightm all the time using that alias and
minor number. It means serial20 alias ends up as ttyPS20.

If alias is not setup for probed IP instance the first unused position is
used but that needs to be checked if it is really empty because another
instance doesn't need to be probed at that time. of_alias_get_alias_list()
fills alias bitmap which exactly shows which ID is free.
If alias pointing to different not compatible IP, it is free to use.

cdns_get_id() call is placed below structure allocation to simplify
error path.

Signed-off-by: Michal Simek <redacted>
---

Changes in v3: None
Changes in v2:
- Add handle of return value from of_alias_get_alias_list

Needs to be applied on the top of
https://lkml.org/lkml/2018/9/3/404
https://lkml.org/lkml/2018/9/3/400 (minor that's why just in case)

Greg: Please apply it with
"of: base: Introduce of_alias_get_alias_list() to check alias IDs
Rob is ok with that.

I don't have that patch, can you resend the whole series?

thanks,

greg k-h