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| author | Rob Clark <robdclark@gmail.com> | 2016-11-14 17:40:57 -0500 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-11-15 08:33:35 +0100 |
| commit | 35cf03508d8466ecc5199c9d609e74e85bec785b (patch) | |
| tree | 967ecc9746c8f8c3de8773d2efdadc12a1a5a836 /drivers/gpu/drm/drm_modeset_lock.c | |
| parent | 6bfec6d94556683c91c937a20576118183af9e1d (diff) | |
| download | linux-35cf03508d8466ecc5199c9d609e74e85bec785b.tar.gz | |
drm: don't let crtc_ww_class leak out
kbuild spotted this error, with drm/msm patches that add a new modeset-lock in the driver and driver built as a module: ERROR: "crtc_ww_class" [drivers/gpu/drm/msm/msm.ko] undefined! Really the only reason for crtc_ww_class not being internal to drm_modeset_lock.c is that drm_modeset_lock_init() was static-inline (for no particularly good reason). Fix that, and move crtc_ww_class into drm_modeset_lock.c. Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1479163257-18703-1-git-send-email-robdclark@gmail.com
Diffstat (limited to 'drivers/gpu/drm/drm_modeset_lock.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modeset_lock.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c index 61146f5b4f56..9059fe3145a1 100644 --- a/drivers/gpu/drm/drm_modeset_lock.c +++ b/drivers/gpu/drm/drm_modeset_lock.c @@ -60,6 +60,8 @@ * lists and lookup data structures. */ +static DEFINE_WW_CLASS(crtc_ww_class); + /** * drm_modeset_lock_all - take all modeset locks * @dev: DRM device @@ -398,6 +400,17 @@ int drm_modeset_backoff_interruptible(struct drm_modeset_acquire_ctx *ctx) EXPORT_SYMBOL(drm_modeset_backoff_interruptible); /** + * drm_modeset_lock_init - initialize lock + * @lock: lock to init + */ +void drm_modeset_lock_init(struct drm_modeset_lock *lock) +{ + ww_mutex_init(&lock->mutex, &crtc_ww_class); + INIT_LIST_HEAD(&lock->head); +} +EXPORT_SYMBOL(drm_modeset_lock_init); + +/** * drm_modeset_lock - take modeset lock * @lock: lock to take * @ctx: acquire ctx |