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| author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2017-09-12 15:37:48 +0200 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2017-09-13 09:51:53 +0200 |
| commit | c2e4ff34f4a7631380fcae1b7381e24e9bc1345e (patch) | |
| tree | 96a74a20e6d611648e8b1439ba50d327061d467a /drivers/gpu/drm/drm_plane.c | |
| parent | 13736ba3b38b1b50979eaafd2e63ab9da146a059 (diff) | |
| download | lwn-c2e4ff34f4a7631380fcae1b7381e24e9bc1345e.tar.gz lwn-c2e4ff34f4a7631380fcae1b7381e24e9bc1345e.zip | |
drm/atomic: Convert pageflip 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/20170912133749.6532-6-maarten.lankhorst@linux.intel.com
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index f3a283e2bbd7..5d1c4f452ca8 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -986,7 +986,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, return -EINVAL; } - drm_modeset_acquire_init(&ctx, 0); + drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); retry: ret = drm_modeset_lock(&crtc->mutex, &ctx); if (ret) @@ -1075,8 +1075,9 @@ out: crtc->primary->old_fb = NULL; if (ret == -EDEADLK) { - drm_modeset_backoff(&ctx); - goto retry; + ret = drm_modeset_backoff(&ctx); + if (!ret) + goto retry; } drm_modeset_drop_locks(&ctx); |