linux-kernel - Re: [ath5k-devel] [PATCH v2] ath5k: disable ASPM

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Message-ID: <20100621233333.21262abjfxl8j1xc@hayate.sektori.org>
Date:	Mon, 21 Jun 2010 23:33:33 +0300
From:	"Jussi Kivilinna" <jussi.kivilinna@...et.fi>
To:	"Maxim Levitsky" <maximlevitsky@...il.com>
Cc:	"Luis R. Rodriguez" <mcgrof@...il.com>,
	"David Quan" <David.Quan@...eros.com>,
	"Bob Copeland" <me@...copeland.com>,
	"Luis R. Rodriguez" <mcgrof@...badil.infradead.org>,
	ath5k-devel@...ts.ath5k.org, linux-wireless@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [ath5k-devel] [PATCH v2] ath5k: disable ASPM

Quoting "Maxim Levitsky" <maximlevitsky@...il.com>:

> Card (at least mine) advertises its as a 'pre pci 1.1 device'.
> Therefore if I enable CONFIG_PCIEASPM, the pci core will automaticly
> disable ASPM (both L0s and L1) on this card.
> I won't be surprised that windows does the same.
>

Even if CONFIG_PCIEASPM compiled in, ASPM code can be disabled by user  
with pcie_aspm=off option, leaving BIOS-enabled L0s on.

-Jussi

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