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| author |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-01-29 09:56:43 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-01-29 10:50:54 +0100 |
| commit | 168982d243d7f8dc368e508a61a8516a23b0bbec (patch) | |
| tree | 8ecd6ae1d497c41e2bf5af37c9f5c7f7b7833363 /include/drm/drm_drv.h | |
| parent | drm/fb-helper: generic: Fix drm_fbdev_client_restore() (diff) | |
| download | linux-dev-168982d243d7f8dc368e508a61a8516a23b0bbec.tar.xz linux-dev-168982d243d7f8dc368e508a61a8516a23b0bbec.zip | |
drm/doc: Add a warning to drm_dev_is_unplugged
It's probably not what you want, definitely not after Noralf's work to
add drm_dev_enter/exit.
Cc: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190129085643.16357-1-daniel.vetter@ffwll.ch
Diffstat (limited to 'include/drm/drm_drv.h')
| -rw-r--r-- | include/drm/drm_drv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index 35af23f5fa0d..e32c12877bc5 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -643,6 +643,10 @@ void drm_dev_unplug(struct drm_device *dev); * Unplugging itself is singalled through drm_dev_unplug(). If a device is * unplugged, these two functions guarantee that any store before calling * drm_dev_unplug() is visible to callers of this function after it completes + * + * WARNING: This function fundamentally races against drm_dev_unplug(). It is + * recommended that drivers instead use the underlying drm_dev_enter() and + * drm_dev_exit() function pairs. */ static inline bool drm_dev_is_unplugged(struct drm_device *dev) { |