drm/atomic: Convert atomic ioctl locking to interruptible.

Pass DRM_MODESET_ACQUIRE_INTERRUPTIBLE to acquire_init, and
handle drm_modeset_backoff which can now fail by returning the error.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170912133749.6532-3-maarten.lankhorst@linux.intel.com
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
This commit is contained in:
Maarten Lankhorst 2017-09-12 15:37:45 +02:00
parent 6f8bcc744a
commit dad56ce417

View File

@ -2231,7 +2231,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
(arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
return -EINVAL;
drm_modeset_acquire_init(&ctx, 0);
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
state = drm_atomic_state_alloc(dev);
if (!state)
@ -2342,7 +2342,8 @@ out:
if (ret == -EDEADLK) {
drm_atomic_state_clear(state);
drm_modeset_backoff(&ctx);
ret = drm_modeset_backoff(&ctx);
if (!ret)
goto retry;
}