DMA problem with 2.4.21 and 2.4.22-rc1

From: Ian Chilton (ian@ichilton.co.uk)
Date: Thu Aug 07 2003 - 11:09:38 EST

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Hello,

[Please cc me in on any replies]

I am having problems getting a box into DMA mode with 2.4.21 and
2.4.22-rc1:

[root@baloo:~]# hdparm -d1 /dev/hda

/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)

Relevent dmesg stuff:

Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
hda: C/H/S=19158/16/255 from BIOS ignored
hda: WDC WD400JB-00ENA0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: attached ide-disk driver.
hda: host protected area => 1
hda: 78165360 sectors (40021 MB) w/8192KiB Cache, CHS=77545/16/63

Any ideas?

Thanks!

--ian

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Next message: Badari Pulavarty: "Re: [PATCH][2.6-mm] Readahead issues and AIO read speedup"
Previous message: Alan Cox: "Re: Loading Pentium III microcode under Linux - catch 22!"
Next in thread: Bartlomiej Zolnierkiewicz: "Re: DMA problem with 2.4.21 and 2.4.22-rc1"
Reply: Bartlomiej Zolnierkiewicz: "Re: DMA problem with 2.4.21 and 2.4.22-rc1"
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