Re: Possible Regression due to c074fef5d36e ("of/platform: Defer probes of registered devices").

[Russell King - ARM Linux <linux@arm.linux.org.uk>]

On Mon, Oct 26, 2015 at 10:56:03AM +0100, Geert Uytterhoeven wrote:
> On Mon, Oct 26, 2015 at 10:40 AM, Sylvain Rochet
> <sylvain.rochet@finsecur.com> wrote:
> > On Mon, Oct 26, 2015 at 12:20:39PM +0900, Simon Horman wrote:
> >> I have observed a possible regression in next-20151022
> >> due to c074fef5d36e ("of/platform: Defer probes of registered devices").
> >>
> >> The problem manifests on the r8a7791 based koelsch board.
> >> With the above patch present booting the board using the shmobile_defconfig
> >> results in no console output. While after reverting the above patch
> >> the boot proceeds all the way to user-space.
> >>
> >> With DEBUG_LL and EARLY_PRINTK enabled I was able to capture some console
> >> output. I have included both that boot log, and a log of boot all the way to
> >> userspace with the patch in question reverted.
> >>
> >> The problem does not seem to manifiest on other boards for other
> >> Renesas ARM  SoCs that I have access too. In particular the
> >> r8a7790 based lager board; the r8a7790 and r8a7791 are both members
> >> of the R-Car Gen2 family of SoCs.
> >
> > Atmel SoC hit this regresssion too, discussion about this issue is in
> > the following thread:
> >  https://lkml.org/lkml/2015/10/16/733
> 
> More reading material in "[GIT PULL] On-demand device probing"
> (https://lkml.org/lkml/2015/10/14/126)

It's quite obvious from the thread that the on-demand device probing is
*not* going to be merged for 4.4, and so it should not be in linux-next
at all.  Having it in linux-next, it's disrupting people's testing of
the 4.4 merge window material.

Tomeu, please remove it so people can continue to test material
sheduled for the 4.4 merge window.  Thanks.

-- 
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.