[RESEND PATCH v5 4/5] drm/bridge/sii8620: fix resource acquisition error handling

Mark Brown broonie at kernel.org
Wed Jun 24 10:11:39 EDT 2020

On Wed, Jun 24, 2020 at 03:43:10PM +0200, Andrzej Hajda wrote:
> On 24.06.2020 15:25, Mark Brown wrote:

> > If we silently ignore all deferred probe errors we make it hard for
> > anyone who is experiencing issues with deferred probe to figure out what
> > they're missing.  We should at least be logging problems at debug level
> > so there's something for people to go on without having to hack the
> > kernel source.

> But you can always do:

> cat /sys/kernel/debug/devices_deferred

> And you will find there deferred probe reason (thanks to patch 2/5).

Right, my point is more that we shouldn't be promoting discarding the
diagnostics entirely but rather saying that we want to redirect those
somewhere else.

> Eventually if you want it in dmesg anyway, one can adjust probe_err function
> to log probe error on debug level as well.

That would most likely be very useful as a boot option for problems that
occur before we get a console up.
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