Am 17.07.2014 22:50, schrieb Alex Deucher:
Hi Dave,
A few more fixes for 3.16. The pageflipping fixes I dropped last week
have finally shaped up so this is mostly fixes for fallout from the
pageflipping code changes. Also fix a memory leak and a black screen
when restoring the backlight on console unblanking.
The following changes since commit
bf38b025d3f58f4c1273714ff1be5bfbf99574a4:
Merge branch 'drm-fixes-3.16' of
git://people.freedesktop.org/~agd5f/linux into drm-fixes (2014-07-11
11:24:13 +1000)
are available in the git repository at:
git://people.freedesktop.org/~agd5f/linux drm-fixes-3.16
for you to fetch changes up to
5f87e090a7368adc2290ae17ffd82a070caadd20:
drm/radeon: Make classic pageflip completion path less racy.
(2014-07-17 09:04:03 -0400)
----------------------------------------------------------------
Alex Deucher (2):
drm/radeon: avoid leaking edid data
drm/radeon: set default bl level to something reasonable
Mario Kleiner (4):
drm/radeon: Prevent too early kms-pageflips triggered by vblank.
drm/radeon: Remove redundant fence unref in pageflip path.
drm/radeon: Add missing vblank_put in pageflip ioctl error path.
drm/radeon: Make classic pageflip completion path less racy.
Michel Dänzer (2):
drm/radeon: Move pinning the BO back to radeon_crtc_page_flip()
drm/radeon: Complete page flip even if waiting on the BO fence
fails
Hello Alex and Michel,
isn't this needed anylonger?
drm-radeon-Disable-pflip-interrupts.patch
[-]
From 462febcc7b5f6e54648f2fd941b9f90de16e54f1 Mon Sep 17 00:00:00 2001
From: Michel Dänzer <michel.daenzer@xxxxxxx>
Date: Mon, 14 Jul 2014 06:42:06 +0000
Subject: drm/radeon: Disable pflip interrupts
With Mario's previous fix, there are three possible scenarios for the
pflip interrupts:
1) If a pflip interrupt can occur before the corresponding vblank
interrupt, the sequence number of the userspace event will be too
small by one.
2) If a pflip interrupt can occur after the vblank interrupt and after
the next flip is programmed to the hardware,
radeon_crtc_handle_flip()
will complete the next flip earlier than expected by userspace.
3) Otherwise, radeon_crtc_handle_flip() doesn't perform any actual work
when called from the pflip interrupt handler, i.e. the pflip
interrupt
is useless.
In summary, Mario's fix made the pflip interrupts useless in the best
case and harmful in the worst case, so let's disable them.
Signed-off-by: Michel Dänzer <michel.daenzer@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
[-]
Thanks,
Dieter
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