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| author | Asahi Lina <lina@asahilina.net> | 2023-02-05 21:51:24 +0900 |
|---|---|---|
| committer | Javier Martinez Canillas <javierm@redhat.com> | 2023-02-16 16:04:38 +0100 |
| commit | ddddedaa0db99481c5e5abe628ad54f65e8765bc (patch) | |
| tree | c36968c3deca921b56e35c177f4d36a2350376f1 /drivers/dma-buf | |
| parent | 38b2d8efd03d2e56431b611e3523f0158306451d (diff) | |
drm/shmem-helper: Fix locking for drm_gem_shmem_get_pages_sgt()
Other functions touching shmem->sgt take the pages lock, so do that here
too. drm_gem_shmem_get_pages() & co take the same lock, so move to the
_locked() variants to avoid recursive locking.
Discovered while auditing locking to write the Rust abstractions.
Fixes: 2194a63a818d ("drm: Add library for shmem backed GEM objects")
Fixes: 4fa3d66f132b ("drm/shmem: Do dma_unmap_sg before purging pages")
Signed-off-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230205125124.2260-1-lina@asahilina.net
(cherry picked from commit aa8c85affe3facd3842c8912186623415931cc72)
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Diffstat (limited to 'drivers/dma-buf')
0 files changed, 0 insertions, 0 deletions