diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-12-02 14:49:44 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-01-20 15:57:55 +0100 |
| commit | 59ad1465423d968f06f243bc52cc3b1a320a27cf (patch) | |
| tree | e565409bc6d08385bda2e6208f9781396bdf509b /block/compat_ioctl.c | |
| parent | 7147573a5ce499dec3979e6b524691d47e1288d5 (diff) | |
| download | kernel_replicant_linux-59ad1465423d968f06f243bc52cc3b1a320a27cf.tar.gz kernel_replicant_linux-59ad1465423d968f06f243bc52cc3b1a320a27cf.tar.bz2 kernel_replicant_linux-59ad1465423d968f06f243bc52cc3b1a320a27cf.zip | |
drm/nouveau: protect evo_wait/evo_kick sections with a channel mutex
With per-crtc locks modeset operations can run in parallel, and the
cursor code uses the device-global evo master channel for hw frobbing.
But the pageflip code can also sync with the master under some
circumstances. Hence just wrap things up in a mutex to ensure that
pushbuf access doesn't intermingle.
The approach here is a bit overkill since the per-crtc channels used
to schedule the pageflips could probably be used without this pushbuf
locking, but I'm not familiar enough with the nouveau codebase to be
sure of that.
v2: Add missing mutex_init to avoid angering lockdep.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'block/compat_ioctl.c')
0 files changed, 0 insertions, 0 deletions