linux-kernel - Re: [RFC/PATCH] x86: Early-boot serial I/O support

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Message-ID: <4C38E3B1.3090401@cs.helsinki.fi>
Date:	Sun, 11 Jul 2010 00:18:41 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...hat.com>,
	Cyrill Gorcunov <gorcunov@...il.com>
Subject: Re: [RFC/PATCH] x86: Early-boot serial I/O support

H. Peter Anvin wrote:
>> +
>> +    while ((inb(early_serial_base + LSR)&  XMTRDY) == 0&&  --timeout)
>> +        ;
>> +
> 
> cpu_relax(); here, probably.

Fixed.
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