Re: 2.4.1: DMA gets disabled due to irq timeout

From: Frank Mattern (
Date: Sun Feb 11 2001 - 18:14:16 EST


From: Igor Nekrestyanov (
>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,
and in 2.4.1-ac9.

Are any fixes known?

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

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This archive was generated by hypermail 2b29 : Thu Feb 15 2001 - 21:00:17 EST