Bug 80689
| Summary: | kernel gives bogus "hda: DMA disabled" message. | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Hans de Goede <hdegoede> |
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
| Status: | CLOSED UPSTREAM | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | CC: | wtogami |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2003-06-05 13:36:23 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
It actually is disabled when you get that message. There's just no message when it reenables it. I know (after reading the source) but since Joe the average user doesn't read kernel source does he know? This is fixed in the base code now |
kernel gives a bogus "hda: DMA disabled" message. I noticed that the 2.4.20-2.2 kernel gives a bogus hda: DMA disabled message, while it is actually enabled, some scanning of the source found me this: in drivers/ide/ide.c if (drive->autotune != 2) { /* DMA timings and setup moved to ide-probe.c */ if (!driver->supports_dma && HWIF(drive)->ide_dma_off_quietly) // HWIF(drive)->ide_dma_off_quietly(drive); HWIF(drive)->ide_dma_off(drive); drive->dsc_overlap = (drive->next != drive && driver->supports_ drive->nice1 = 1; } Look at how for some reason a dma_off_quietly was changed into a dma_off without beign quiet. Also notice that the code only checks for the availabality of dma_off_quietly. I think this should be changed back otherwise you'll get lots of support calls: why is my dma disabled???