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| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2025-04-03 17:26:33 +0300 |
|---|---|---|
| committer | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2025-04-04 15:56:44 +0300 |
| commit | dd717762761807452ca25634652e180a80349cd8 (patch) | |
| tree | 3838b83a8de20613345cbeb220e0aaf8356db98b /arch/powerpc | |
| parent | 446d38554dc43e8391441fb3413512ba87a88583 (diff) | |
drm/shmem-helper: Fix unsetting shmem vaddr while vmap refcount > 0HEADdrm-misc-next
We switched to use refcount_t for vmaps and missed to change the vunmap
code to properly unset the vmap pointer, which is now cleared while vmap's
refcount > 0. Clear the cached vmap pointer only when refcounting drops to
zero to fix the bug.
Fixes: e1fc39a92332 ("drm/shmem-helper: Use refcount_t for vmap_use_count")
Reported-by: Lucas De Marchi <lucas.demarchi@intel.com>
Closes: https://lore.kernel.org/dri-devel/20250403105053.788b0f6e@collabora.com/T/#m3dca6d81bedc8d6146a56b82694624fbc6fa4c96
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250403142633.484660-1-dmitry.osipenko@collabora.com
Diffstat (limited to 'arch/powerpc')
0 files changed, 0 insertions, 0 deletions