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| author | David Herrmann <dh.herrmann@gmail.com> | 2014-01-29 13:49:19 +0400 |
|---|---|---|
| committer | David Herrmann <dh.herrmann@gmail.com> | 2014-03-16 15:25:17 +0400 |
| commit | 1616c525b98deb34b8f4b02eccf0ae3a1310fa27 (patch) | |
| tree | d28625fe2ae686919c757df8ec6b8940e0d46d22 /include/drm | |
| parent | 099d1c290e2ebc3b798961a6c177c3aef5f0b789 (diff) | |
| download | linux-1616c525b98deb34b8f4b02eccf0ae3a1310fa27.tar.xz | |
drm: add minor-lookup/release helpers
Instead of accessing drm_minors_idr directly, this adds a small helper to
hide the internals. This will help us later to remove the drm_global_mutex
requirement for minor-lookup.
Furthermore, this also makes sure that minor->dev is always valid and
takes a reference-count to the device as long as the minor is used in an
open-file. This way, "struct file*"->private_data->dev is guaranteed to be
valid (which it has to, as we cannot reset it).
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drmP.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 4e53f1607355..82963167f161 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1672,6 +1672,10 @@ void drm_dev_ref(struct drm_device *dev); void drm_dev_unref(struct drm_device *dev); int drm_dev_register(struct drm_device *dev, unsigned long flags); void drm_dev_unregister(struct drm_device *dev); + +struct drm_minor *drm_minor_acquire(unsigned int minor_id); +void drm_minor_release(struct drm_minor *minor); + /*@}*/ /* PCI section */ |