linux-kernel - 2.6.26-rc1 regression: ISA DMA broken (bisected)

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Date:	Fri, 09 May 2008 03:37:54 +0200
From:	Rene Herman <rene.herman@...access.nl>
To:	Glauber Costa <gcosta@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	Pete Clements <clem@...m.clem-digital.net>,
	Takashi Iwai <tiwai@...e.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	ALSA devel <alsa-devel@...a-project.org>
Subject: 2.6.26-rc1 regression: ISA DMA broken (bisected)

Good day.

commit 8779f2fc3b84ebb6c5181fb13d702e9944c16069

"x86: don't try to allocate from DMA zone at first"

breaks all of ISA DMA. Or all of ALSA ISA DMA at least. All
ISA soundcards are silent following that commit -- no error
messages, everything appears fine, just silence.

It won't just revert due to 32/64 merge.

Rene.


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