Bug 74175 - IRQ conflict, by this DMA on drive unavailable
IRQ conflict, by this DMA on drive unavailable
Status: CLOSED CURRENTRELEASE
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
7.3
i386 Linux
medium Severity low
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Assigned To: Arjan van de Ven
Brian Brock
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Depends On:
Blocks:
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Reported: 2002-09-17 09:14 EDT by Denis Fedorishenko
Modified: 2007-04-18 12:46 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2003-06-07 22:27:13 EDT
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Description Denis Fedorishenko 2002-09-17 09:14:32 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.0) Gecko/20020526

Description of problem:
SvrWks CSB5: IDE controller on PCI bus 00 dev 79
PCI: Device 00:0f.1 not available because of resource collisions
SvrWks CSB5: (ide_setup_pci_device:) Could not enable device.
Alan Cox says about some workaround, but i'm not know all details.
after this enabling DMA on hard drive impossible, this problem i see on many
systems. Alan Cox


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.Enable PnP OS in BIOS? On most default settings IRQ conflict.
2.
3.
	

Actual Results:  Device XX:XX.X not available because of resource collisions

hdparm -d 1 /dev/hdb

setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted


Additional info:
Comment 1 Colin Tinker 2002-10-13 12:38:18 EDT
I have this problem on 5 systems but it only applies to the cdrom.
Comment 2 Alan Cox 2003-06-07 22:27:35 EDT
The current errata kernels resolve this issue

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