This is v4 of https://lore.kernel.org/lkml/20240521181817.097af5e1@xxxxxxxxxxxxx/T/ The goal of this patch series is fixing a deadlock upon locking the dma reservation of a DRM gem object when pinning it, at a prime import operation. Changelog: v3: - Split driver fixes into separate commits for Panfrost and Lima - Make drivers call drm_gem_shmem_pin_locked instead of drm_gem_shmem_object_pin - Improved commit message for first patch to explain why dma resv locking in the pin callback is no longer necessary. v2: - Removed comment explaining reason why an already-locked pin function replaced the locked variant inside Panfrost's object pin callback. - Moved already-assigned attachment warning into generic already-locked gem object pin function Adrián Larumbe (3): drm/panfrost: Fix dma_resv deadlock at drm object pin time drm/lima: Fix dma_resv deadlock at drm object pin time drm/gem-shmem: Add import attachment warning to locked pin function drivers/gpu/drm/drm_gem_shmem_helper.c | 2 ++ drivers/gpu/drm/lima/lima_gem.c | 2 +- drivers/gpu/drm/panfrost/panfrost_gem.c | 2 +- 3 files changed, 4 insertions(+), 2 deletions(-) base-commit: 7acacca1b157fcb258cfd781603425f73bc7370b -- 2.45.1
