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| author | Thomas Gleixner <[email protected]> | 2011-07-23 10:45:07 +0000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2011-11-14 09:28:50 +0000 |
| commit | d53dab3ae1a3c6b438738c3792c98ac63f0061f4 (patch) | |
| tree | f4e78aae50cd45ae335dbfed81896c3d965628fe /lib/debugobjects.c | |
| parent | drm/radeon/kms/combios: fix dynamic allocation of PM clock modes (diff) | |
| download | kernel-d53dab3ae1a3c6b438738c3792c98ac63f0061f4.tar.gz kernel-d53dab3ae1a3c6b438738c3792c98ac63f0061f4.zip | |
drm: Remove utterly bogus preempt_disable() sections
commit 27641c3f (drm/vblank: Add support for precise vblank
timestamping) adds preempt_disable()/enable() around a spin locked
section with the comments:
* Disable preemption, so vblank_time_lock is held as short as
* possible, even under a kernel with PREEMPT_RT patches.
/* Disable preemption while holding vblank_time_lock. Do
* it explicitely to guard against PREEMPT_RT kernel.
Just that this has never been tested on a RT kernel which would have
granted that nonsense with a might_sleep() warning because
dev->vblank_time_lock is converted to a "sleeping" spinlock on RT.
So this is activly wrong on RT and superflous on mainline. Remove it.
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Mario Kleiner <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'lib/debugobjects.c')
0 files changed, 0 insertions, 0 deletions