| commit | f67c365de917512608cdc6cb3109d1a9cb3ac32b | [log] [tgz] |
|---|---|---|
| author | Vincent Donnefort <vincent.donnefort@arm.com> | Fri Aug 02 11:18:35 2019 +0100 |
| committer | Vincent Donnefort <vincent.donnefort@arm.com> | Mon Dec 09 16:12:20 2019 +0000 |
| tree | 805e579f2aa5db0c7941a0f3b062a39aeae5b36d | |
| parent | 0d1a2cdbdf1fa126735f49f07f709a6a501aea52 [diff] |
drm_hwcomposer: Add refcount for GEM handle The linux kernel doesn't provide reference counting for the handle returned by FD_TO_HANDLE ioctl. It means that if the same Gralloc buffer is imported twice, the first GEM_CLOSE will destroy the handle even if it is still in use by another import. Remedy this issue by doing the reference counting directly in the DRM generic platform support: ImportHandle() will increase the reference, while ReleaseHandle() will decrease and close it, if necessary. Signed-off-by: Vincent Donnefort <vincent.donnefort@arm.com>
Patches to drm_hwcomposer are very much welcome, we really want this to be the universal HW composer implementation for Android and similar platforms So please bring on porting patches, bugfixes, improvements for documentation and new features.
A short list of contribution guidelines:
Submit changes via gitlab merge requests on gitlab.freedesktop.org
drm_hwcomposer is Apache 2.0 Licensed and we require contributions to follow the developer's certificate of origin: http://developercertificate.org/
When submitting new code please follow the naming conventions documented in the generated documentation. Also please make full use of all the helpers and convenience macros provided by drm_hwcomposer. The below command can help you with formatting of your patches:
`git diff | clang-format-diff-5.0 -p 1 -style=file`
Hardware specific changes should be tested on relevant platforms before committing.
If you need inspiration, please checkout our TODO issues
Happy hacking!