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Date: Fri, 2 Dec 2011 11:30:59 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>,
        Scott Wood <scottwood@freescale.com>, <gregkh@suse.de>,
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Subject: Re: [PATCH 3/3] 8250: add workaround for MPC8[356]xx UART break IRQ
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> > OK, I'll simply change the above to CONFIG_PPC then.
> 
> It does, the bug is in the uart IP which I don't think we ever plan on fixing, so 32 or 64-bit parts will have it for ever and ever ;)

It should be runtime selected, there should be no ifdefs here.