From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "David P. Reed" <dpreed@reed.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org, "David P. Reed" <dpreed@reed.com>
Subject: Re: [patch 1/2] x86: define outb_pic and inb_pic to stop using outb_p and inb_p
Date: Mon, 18 Feb 2008 15:45:46 +0000 [thread overview]
Message-ID: <20080218154546.66e4c72d@core> (raw)
In-Reply-To: <6gr00g$g7mc5k@smtp01.lnh.mail.rcn.net>
> +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
next prev parent reply other threads:[~2008-02-18 15:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-18 15:06 [patch 1/2] x86: define outb_pic and inb_pic to stop using outb_p and inb_p David P. Reed
2008-02-18 15:45 ` Alan Cox [this message]
2008-02-18 17:30 ` [linux-kernel] " David P. Reed
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