Joakim Zhang 2fd1335445 dma-mapping: clear dev->dma_mem to NULL after freeing it ... [ Upstream commit b07bc23476 ] Reproduced with below sequence: dma_declare_coherent_memory()->dma_release_coherent_memory() ->dma_declare_coherent_memory()->"return -EBUSY" error It will return -EBUSY from the dma_assign_coherent_memory() in dma_declare_coherent_memory(), the reason is that dev->dma_mem pointer has not been set to NULL after it's freed. Fixes: cf65a0f6f6 ("dma-mapping: move all DMA mapping code to kernel/dma") Signed-off-by: Joakim Zhang <joakim.zhang@cixtech.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-01-25 15:44:53 -08:00
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coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 15:44:53 -08:00
contiguous.c	Revert "dma-contiguous: check for memory region overlap"	2023-09-08 05:58:32 -03:00
debug.c	dma-debug: Fix a typo in a debugging eye-catcher	2023-10-23 07:52:54 +02:00
debug.h	dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC	2021-10-18 12:46:45 +02:00
direct.c	dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM	2023-11-06 08:38:16 +01:00
direct.h	dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM	2023-11-06 08:38:16 +01:00
dummy.c	dma-mapping: return error code from dma_dummy_map_sg()	2021-08-09 17:13:06 +02:00
Kconfig	dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol	2023-10-22 16:38:54 +02:00
Makefile	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
map_benchmark.c	dma-mapping: benchmark: remove MODULE_LICENSE in non-modules	2023-04-13 13:13:51 -07:00
mapping.c	dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM	2023-11-06 08:38:16 +01:00
ops_helpers.c	dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}	2021-07-16 11:30:26 +02:00
pool.c	dma-pool: remove a __maybe_unused label in atomic_pool_expand	2023-08-31 14:12:37 +02:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-06-07 15:06:28 +02:00
swiotlb.c	swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC	2023-11-08 16:27:05 +01:00