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| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2023-05-30 00:39:34 +0200 |
|---|---|---|
| committer | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2023-06-21 19:22:20 +0200 |
| commit | 8021fa16b7ec0a3b0457dc15484a7691f99265bc (patch) | |
| tree | 8a703514884bca6446b0ecf6139e8b55d8ef268a /drivers/gpu/drm/lima | |
| parent | drm: Don't assert held reservation lock for dma-buf mmapping (diff) | |
| download | linux-8021fa16b7ec0a3b0457dc15484a7691f99265bc.tar.xz linux-8021fa16b7ec0a3b0457dc15484a7691f99265bc.zip | |
dma-buf: Change locking policy for mmap()
Change locking policy of mmap() callback, making exporters responsible
for handling dma-buf reservation locking. Previous locking policy stated
that dma-buf is locked for both importers and exporters by the dma-buf
core, which caused a deadlock problem for DRM drivers in a case of
self-imported dma-bufs which required to take the lock from the DRM
exporter side.
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-6-dmitry.osipenko@collabora.com
Diffstat (limited to 'drivers/gpu/drm/lima')
0 files changed, 0 insertions, 0 deletions