linux-kernel - Re: [patch 1/4] PNP: make pnp_{port,mem,etc}_start(), et al work for invalid resources

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Message-ID: <4831FDC6.3090709@keyaccess.nl>
Date:	Tue, 20 May 2008 00:23:02 +0200
From:	Rene Herman <rene.herman@...access.nl>
To:	Bjorn Helgaas <bjorn.helgaas@...com>
CC:	Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, Adam Belay <ambx1@....rr.com>,
	Adam M Belay <abelay@....edu>,
	Li Shaohua <shaohua.li@...el.com>,
	Matthieu Castet <castet.matthieu@...e.fr>,
	Thomas Renninger <trenn@...e.de>,
	Jaroslav Kysela <perex@...ex.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Takashi Iwai <tiwai@...e.de>
Subject: Re: [patch 1/4] PNP: make pnp_{port,mem,etc}_start(), et al work
 for invalid resources

On 16-05-08 00:07, Bjorn Helgaas wrote:

> Some callers use pnp_port_start() and similar functions without
> making sure the resource is valid.  This patch makes us fall
> back to returning the initial values if the resource is not
> valid or not even present.
> 
> This mostly preserves the previous behavior, where we would just
> return the initial values set by pnp_init_resource_table().  The
> original 2.6.25 code didn't range-check the "bar", so it would
> return garbage if the bar exceeded the table size.  This code
> returns sensible values instead.
> 
> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@...com>

Acked-by: Rene Herman <rene.herman@...il.com>

Rene.

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