Joakim Zhang 849ca053be 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: cf65a0f6f6ff ("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 15:35:26 -08:00

..

coherent.c

dma-mapping: clear dev->dma_mem to NULL after freeing it

2024-01-25 15:35:26 -08:00

contiguous.c

Revert "dma-contiguous: check for memory region overlap"

2023-09-08 05:58:32 -03:00

debug.c

dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock

2023-08-30 11:29:08 +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

swiotlb: if swiotlb is full, fall back to a transient memory pool

2023-08-01 18:02:20 +02:00

direct.h

dma-mapping: force bouncing if the kmalloc() size is not cache-line-aligned

2023-06-19 16:19:23 -07:00

dummy.c

dma-mapping: return error code from dma_dummy_map_sg()

2021-08-09 17:13:06 +02:00

Kconfig

dma-contiguous: fix the Kconfig entry for CONFIG_DMA_NUMA_CMA

2023-08-30 13:52:53 +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: move arch_dma_set_mask() declaration to header

2023-07-31 17:54:28 +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: 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

2023-11-28 17:20:13 +00:00