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

[Sylvain Rochet <sylvain.rochet@finsecur.com>]

Hello Simon,

On Mon, Oct 26, 2015 at 12:20:39PM +0900, Simon Horman wrote:
> Hi,
> 
> 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

Sylvain