Joakim Zhang ccc94806d0 dma-mapping: clear dev->dma_mem to NULL after freeing it ... [ Upstream commit b07bc2347672cc8c7293c64499f1488278c5ca3d ] 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 14:52:38 -08:00
..
Kconfig	Merge branch 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2021-09-03 10:34:44 -07:00
Makefile	dma-mapping updates for 5.11:	2020-12-22 13:19:43 -08:00
coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 14:52:38 -08:00
contiguous.c	dma-contiguous: fix a typo error in a comment	2020-11-27 10:33:42 +01:00
debug.c	dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock	2023-10-06 13:18:14 +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-direct: use the correct size for dma_set_encrypted()	2022-06-29 09:03:31 +02:00
direct.h	dma-direct: avoid redundant memory sync for swiotlb	2022-04-20 09:34:21 +02:00
dummy.c	dma-mapping: return error code from dma_dummy_map_sg()	2021-08-09 17:13:06 +02:00
map_benchmark.c	dma-mapping: benchmark: Add support for multi-pages map/unmap	2021-04-02 16:41:08 +02:00
mapping.c	dma-mapping: remove bogus test for pfn_valid from dma_map_resource	2022-04-27 14:38:50 +02:00
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: create dma atomic pool only if dma zone has managed pages	2022-01-27 11:03:00 +01:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-08-26 14:23:22 +02:00
swiotlb.c	swiotlb: max mapping size takes min align mask into account	2022-10-05 10:39:40 +02:00