Date: Mon, 12 Feb 2001 00:14:16 +0100
From: Frank Mattern <frank@rommelwood.de>
To: linux-kernel@vger.kernel.org
Cc: igor@meta.math.spbu.ru
Subject: Re: 2.4.1: DMA gets disabled due to irq timeout
Message-ID: <20010212001416.A854@rommelwood.de>
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Hi,

From: Igor Nekrestyanov (igor@meta.math.spbu.ru)
>I was trying 2.4.1 kernel but under some IO load (bonnie++) 

Me too, same messages...

>DMA gets disabled with following messages: 

hda: timeout waiting for DMA 
ide_dmaproc: chipset supported ide_dma_timeout func only: 14 

my dmesg: 

ide: Assuming 33MHz system bus speed for PIO modes
ALI15X3: IDE controller on PCI bus 00 dev 80
ALI15X3: chipset revision 195
ALI15X3: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x6050-0x6057, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0x6058-0x605f, BIOS settings: hdc:DMA, hdd:pio
hda: IBM-DJSA-210, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 11733120 sectors (6007 MB) w/384KiB Cache, CHS=730/255/63, UDMA(33)

an other chipset but the same problem...
There are more ide_dma_timeout problems known with other chipsets. 
It seems to be an chipset independent problem, it exits also in 2.4.0,
(see http://boudicca.tux.org/hypermail/linux-kernel/2001week02/1429.html)
and in 2.4.1-ac9.

Are any fixes known?

p.s. 
  Please cc: me explicitly, because i am not on the list. 

thanks 
    Frank
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