Thread (12 messages) 12 messages, 2 authors, 2014-11-05
STALE4236d

[PATCH 4/4] PM / Domains: Let the ->attach_dev() callback return an error code

From: geert@linux-m68k.org (Geert Uytterhoeven)
Date: 2014-10-29 10:28:50
Also in: linux-pm, linux-samsung-soc

Hi Ulf,

On Wed, Oct 29, 2014 at 11:14 AM, Ulf Hansson [off-list ref] wrote:
quoted
quoted
quoted
Given that several patch series using ->attach_dev() are already floating
around and will be in -next soon, what is the plan of getting this in?
Doing it ASAP (in v3.18-rc3)?
Delaying this to v3.19-rc2, which will require an atomic fixing of its users?
Any other option?
I would prefer if we consider 3.18-rc[x|. That's applies also to the
below patchset, which actually fixes an issue. It would simplify the
process of handling other SOC specific patches which adds PM domain
support.

[PATCH v3 0/9] PM / Domains: Fix race conditions during boot
v3.18-rc[x] sounds fine.
quoted
Obviously the patches needs to be reviewed, I guess we are still in
the process of doing that.
Indeed.

Perhaps we can get just the prototype change of ->attach_dev() in first?
That leaves some time for reviewing the code changes to actually handle
the return value, and unblocks platform patches using ->attach_dev() soon,
which are planned to enter in v3.19-rc.
That's an option.

On the other hand, that would mean that the errors that the
attach_dev() callback would return from you SOC specific code, would
just be ignored until v3.19-rc. That's not so good, hiding errors. :-)
The code to handle the return value could still get in in v3.18-rc.
So the errors would only be unhandled for a short while in -next.
Let's see what Rafael thinks.
Right.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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