Joakim Zhang aaf0fc13be 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 15:27:28 -08:00
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coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 15:27:28 -08:00
contiguous.c	cma: factor out minimum alignment requirement	2022-03-22 15:57:05 -07:00
debug.c	dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock	2023-10-06 14:56:50 +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 updates	2022-08-06 10:56:45 -07:00
direct.h	dma-direct: support PCI P2PDMA pages in dma-direct map_sg	2022-07-26 07:27:47 -04:00
dummy.c	dma-mapping: return error code from dma_dummy_map_sg()	2021-08-09 17:13:06 +02:00
Kconfig	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
Makefile	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
map_benchmark.c	dma-mapping: benchmark: extract a common header file for map_benchmark definition	2022-03-10 07:41:14 +01:00
mapping.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
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	2022-01-15 16:30:29 +02:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-08-23 17:52:21 +02:00
swiotlb.c	swiotlb: mark swiotlb_memblock_alloc() as __init	2023-07-23 13:49:50 +02:00