Re: [PATCH v10 0/9] Add the I3C subsystem

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Hi Greg,

On Sun, 11 Nov 2018 09:39:32 -0800
Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:

> On Fri, Oct 26, 2018 at 04:43:24PM +0200, Boris Brezillon wrote:
> > Hi Greg,
> > 
> > I think we've reached a point where we can eventually consider the I3C
> > framework for inclusion in 4.20 (5.0?). A few more issues were reported
> > on v9 and fixed in v10. I can't guarantee that the implementation is
> > free of bugs but I still think it's worth merging it in v4.20: it's a
> > new subsystem, so we don't risk regressions, and the only way we can
> > detect other issues is by having other people experiment with this
> > implementation.
> > 
> > The only remaining concern raised by Arnd is the fact that both hosts
> > and slaves share the same bus type and are differentiated thanks to
> > their device_type, which IMHO is fine since this is what other
> > subsystems do (plus I don't see other solutions to have both I3C
> > devices and I3C buses represented under /sys/bus/i3c/).  
> 
> Yeah, it's not the nicest, but it will work, we did it also for USB and
> greybus and it solves the issue.
> 
> This all looks good to me, so I've queued it up.  Let's see if
> linux-next has any problems with it.

I recently asked Stephen to add the linux-i3c tree to linux-next, so
I'm expecting conflicts :-/. Sorry, I didn't know you were planning to
take these patches through your tree.

BTW, I also fixed a couple of things when rebasing on top of 4.20-rc1:

- KernelVersion in the sysfs ABI doc has been updated to 5.0
- Fixed i3c_master_getmxds_locked() (bug reported/fixed by Colin here
  https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1799850.html)
- Removed a blank line at the end of master-driver-api.rst

For the record, the i3c/next branch pulled by Stephen is available here
[1].

> Thanks for sticking with it, nice work!

Thanks for reviewing it! Greg, Stephen, let me know if you want me to
reset i3c/next to v4.20-rc1 to avoid conflicts in linux-next.

Regards,

Boris

[1]https://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git/log/?h=i3c/next



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