Bug 15017

Summary: kexec regression, radeon/kms irq related (bisected)
Product: Drivers Reporter: Markus Trippelsdorf (markus)
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Severity: normal CC: rjw
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.33-rc3 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 14885    
Attachments: Disable irq at suspend
Don't process irq until initialized
Handle IH ring overflow

Description Markus Trippelsdorf 2010-01-09 18:49:50 UTC
Commit d8f60cfc93452d0554f6a701aa8e3236cbee4636 (drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips) breaks kexec on my machine (amd64, RS780).
The computer just hangs right after the kexec call and I have to press the reset button to get it running again.
2.6.32 worked flawlessly.
Comment 1 Rafael J. Wysocki 2010-01-13 22:10:44 UTC
First-Bad-Commit : d8f60cfc93452d0554f6a701aa8e3236cbee4636
Comment 2 Rafael J. Wysocki 2010-01-13 22:11:26 UTC
commit d8f60cfc93452d0554f6a701aa8e3236cbee4636
Author: Alex Deucher <alexdeucher@gmail.com>
Date:   Tue Dec 1 13:43:46 2009 -0500

    drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3)

    Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>
Comment 3 Jérôme Glisse 2010-01-15 13:50:02 UTC
Created attachment 24571 [details]
Disable irq at suspend
Comment 4 Jérôme Glisse 2010-01-15 13:50:37 UTC
Created attachment 24572 [details]
Don't process irq until initialized
Comment 5 Jérôme Glisse 2010-01-15 13:51:27 UTC
Created attachment 24573 [details]
Handle IH ring overflow

Please can you test if the attached patch set helps with your issue. Thanks
Comment 6 Markus Trippelsdorf 2010-01-15 14:30:11 UTC
Yes, kexec works again with your patches applied.
Thanks a lot Jérôme.