Joakim Zhang 64299791d0 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 14:37:45 -08:00
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coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 14:37:45 -08:00
contiguous.c	dma-mapping updates for 5.10	2020-10-15 14:43:29 -07:00
debug.c	dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock	2023-10-10 21:53:32 +02:00
debug.h	dma-mapping: move dma-debug.h to kernel/dma/	2020-10-06 07:07:05 +02:00
direct.c	dma-direct: don't over-decrypt memory	2022-06-22 14:13:20 +02:00
direct.h	dma-direct: avoid redundant memory sync for swiotlb	2022-04-20 09:23:30 +02:00
dummy.c	dma-mapping: split <linux/dma-mapping.h>	2020-10-06 07:07:03 +02:00
Kconfig	dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h>	2020-10-06 07:07:04 +02:00
Makefile	dma-mapping: move dma_common_{mmap,get_sgtable} out of mapping.c	2020-09-11 09:14:56 +02:00
mapping.c	dma-mapping: move large parts of <linux/dma-direct.h> to kernel/dma	2020-10-06 07:07:06 +02:00
ops_helpers.c	dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}	2021-07-28 14:35:38 +02:00
pool.c	dma/pool: create dma atomic pool only if dma zone has managed pages	2022-01-27 10:53:44 +01:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-08-26 15:26:43 +02:00
swiotlb.c	swiotlb: max mapping size takes min align mask into account	2022-10-05 10:38:40 +02:00
virt.c	dma-mapping: split <linux/dma-mapping.h>	2020-10-06 07:07:03 +02:00