Re: [PATCH v4 00/12] kgdb: Support late serial drivers; enable early debug w/ boot consoles

[Daniel Thompson]

On Thu, May 07, 2020 at 01:08:38PM -0700, Douglas Anderson wrote:
> This whole pile of patches was motivated by me trying to get kgdb to
> work properly on a platform where my serial driver ended up being hit
> by the -EPROBE_DEFER virus (it wasn't practicing social distancing
> from other drivers).  Specifically my serial driver's parent device
> depended on a resource that wasn't available when its probe was first
> called.  It returned -EPROBE_DEFER which meant that when "kgdboc"
> tried to run its setup the serial driver wasn't there.  Unfortunately
> "kgdboc" never tried again, so that meant that kgdb was disabled until
> I manually enalbed it via sysfs.
> 
> <snip>
> 
> This series (and my comments / documentation / commit messages) are
> now long enough that my eyes glaze over when I try to read it all over
> to double-check.  I've nontheless tried to double-check it, but I'm
> pretty sure I did something stupid.  Thank you ahead of time for
> pointing it out to me so I can fix it in v5.  If somehow I managed to
> not do anything stupid (really?) then thank you for double-checking me
> anyway.

Applied (minus the arm64 specific stuff), should be in the next linux-next.


Daniel.