linux-kernel - Re: Re: [patch 1/2] x86: define outb_pic and inb_pic to stop using outb_p and inb

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Message-ID: <47B9C0A2.2060208@reed.com>
Date:	Mon, 18 Feb 2008 12:30:10 -0500
From:	"David P. Reed" <dpreed@...d.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: Re: [patch 1/2] x86: define outb_pic and inb_pic
 to stop using outb_p and inb_p

Alan Cox wrote:
>> +unsigned char inb_pic(unsigned int port)
>> +{
>> +	/* delay for some accesses to PIC on motherboard or in chipset must be
>> +	   at least one microsecond, but be safe here. */
>> +	unsigned char value = inb(port);
>> +	udelay(2);
>> +	return value;
>> +}
>>     
>
> inline it. Its almost no instructions
>
>   
Will do. Assume you desire inlining of the outb_pic, and also the 
inb_pit and outb_pit routines.  Didn't do it because the code is 
slightly bigger than the call.
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