Re: [PATCH] of: Print rather than WARN'ing when overlap check fails

From: Michael Ellerman
Date: Tue Nov 10 2015 - 04:29:08 EST

On Tue, 2015-11-10 at 16:08 +1100, Michael Ellerman wrote:

> __rmem_check_for_overlap() is called very early in boot, and on some
> powerpc systems it's not safe to call WARN that early in boot.
> If the overlap check fails the system will oops instead of printing a
> warning. Furthermore because it's so early in boot the console is not up
> and the user doesn't see the oops, they just get a dead system.
> Fix it by printing an error instead of calling WARN.
> Fixes: ae1add247bf8 ("of: Check for overlap in reserved memory regions")
> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> ---
> drivers/of/of_reserved_mem.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)

I forgot to say, I assume you're OK to merge this and get it to Linus soonish?
Otherwise I can stuff it in a fix branch and ask Linus to pull that. Let me
know which you'd prefer.


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