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drm: introduce drm_dev_free() to fix error paths

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The error paths in DRM bus drivers currently leak memory as they don't
correctly revert drm_dev_alloc(). Introduce drm_dev_free() to free DRM
devices which haven't been registered, yet.

We must be careful not to introduce any side-effects with cleanups done in
drm_dev_free(). drm_ht_remove(), drm_ctxbitmap_cleanup() and
drm_gem_destroy() are all fine in that regard.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
David Herrmann
2013-10-02 11:23:37 +02:00
committed by Dave Airlie
parent 1c8887dd01
commit 0dc8fe5985
5 changed files with 29 additions and 13 deletions
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include/drm/drmP.h
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@@ -1642,6 +1642,7 @@ static __inline__ void drm_core_dropmap(struct drm_local_map *map)
struct drm_device *drm_dev_alloc(struct drm_driver *driver,
struct device *parent);
void drm_dev_free(struct drm_device *dev);
int drm_dev_register(struct drm_device *dev, unsigned long flags);
int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
/*@}*/