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| author |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2020-03-24 21:39:36 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2020-03-26 15:37:31 +0100 |
| commit | f96306f9892b3a28ece4c65c4d1b95f631b3e63c (patch) | |
| tree | e259f3640c1077d63664ea9e6906ee3ae983bf4e /include/drm | |
| parent | drm: Use drmm_ for drm_dev_init cleanup (diff) | |
| download | wireguard-linux-f96306f9892b3a28ece4c65c4d1b95f631b3e63c.tar.xz wireguard-linux-f96306f9892b3a28ece4c65c4d1b95f631b3e63c.zip | |
drm: manage drm_minor cleanup with drmm_
The cleanup here is somewhat tricky, since we can't tell apart the
allocated minor index from 0. So register a cleanup action first, and
if the index allocation fails, unregister that cleanup action again to
avoid bad mistakes.
The kdev for the minor already handles NULL, so no problem there.
Hence add drmm_remove_action() to the drm_managed library.
v2: Make pointer math around void ** consistent with what Laurent
suggested.
v3: Use drmm_add_action_or_reset and remove drmm_remove_action. Noticed
because of some questions from Thomas. This also means we need to move
the drmm_add_action_or_reset helper earlier in the series.
v4: Uh ... fix slightly embarrassing bug CI spotted.
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200324203936.3330994-1-daniel.vetter@ffwll.ch
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_managed.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/drm/drm_managed.h b/include/drm/drm_managed.h index 89e6fce9f689..2d1e29a2200c 100644 --- a/include/drm/drm_managed.h +++ b/include/drm/drm_managed.h @@ -17,7 +17,14 @@ int __must_check __drmm_add_action(struct drm_device *dev, drmres_release_t action, void *data, const char *name); -void drmm_add_final_kfree(struct drm_device *dev, void *parent); +#define drmm_add_action_or_reset(dev, action, data) \ + __drmm_add_action_or_reset(dev, action, data, #action) + +int __must_check __drmm_add_action_or_reset(struct drm_device *dev, + drmres_release_t action, + void *data, const char *name); + +void drmm_add_final_kfree(struct drm_device *dev, void *container); void *drmm_kmalloc(struct drm_device *dev, size_t size, gfp_t gfp) __malloc; static inline void *drmm_kzalloc(struct drm_device *dev, size_t size, gfp_t gfp) |