IDE DMA errors with 2.6.0-test1

From: Måns Rullgård (
Date: Fri Jul 18 2003 - 09:48:42 EST

I was copying a couple of large files from one partition to another on
the same disk when I got a few of these messages:

hda: dma_timer_expiry: dma status == 0x21
hda: timeout waiting for DMA
hda: timeout waiting for DMA
hda: (__ide_dma_test_irq) called while not waiting
hda: status timeout: status=0xd0 { Busy }

hda: drive not ready for command
ide0: reset: success

The disk controller is:
SIS5513: IDE controller at PCI slot 0000:00:02.5
SIS5513: chipset revision 208
SIS5513: not 100% native mode: will probe irqs later
SIS5513: SiS 961 MuTIOL IDE UDMA100 controller
    ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:pio
hda: IC25N040ATMR04-0, ATA DISK drive
anticipatory scheduling elevator
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdc: ASUS SCB-2408, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 1024KiB
hda: host protected area => 1
hda: 78140160 sectors (40008 MB) w/1740KiB Cache, CHS=4864/255/63, UDMA(100)
 /dev/ide/host0/bus0/target0/lun0: p1 p2 p3

Need I worry about anything?

Måns Rullgård
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