[PATCH] ppc64: iSeries early printk breakage

[Stephen Rothwell]

On Wed, 7 Sep 2005 06:04:36 -0500 Milton Miller <miltonm at bga.com> wrote:
>
> Does anything actually break without this patch?

Yes, an iSeries box will not boot.

> My reading of unregister_console says we will acquire
> the console semaphore, walk the list, fail to find the
> console, relase the semaphore, and return.

Consider the case that console_drivers == NULL (because we have never called register_console).
unregister_console dereferences console_drivers ...

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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