Red Hat Bugzilla – Bug 74175
IRQ conflict, by this DMA on drive unavailable
Last modified: 2007-04-18 12:46:46 EDT
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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):
Steps to Reproduce:
1.Enable PnP OS in BIOS? On most default settings IRQ conflict.
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
I have this problem on 5 systems but it only applies to the cdrom.
The current errata kernels resolve this issue