Joakim Zhang 4985e507e0 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 14:34:25 -08:00
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coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 14:34:25 -08:00
contiguous.c
debug.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
direct.c	dma-mapping: drop the dev argument to arch_sync_dma_for_*	2023-04-05 11:16:43 +02:00
dummy.c
Kconfig
Makefile
mapping.c
remap.c
swiotlb.c	Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""	2022-05-25 09:14:38 +02:00
virt.c