Files
linux-rockchip/kernel
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
..
2022-09-28 09:02:20 +02:00
2022-12-31 13:33:11 +01:00
2022-08-29 19:47:03 -04:00
2022-09-26 10:13:13 -07:00
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2022-12-31 13:33:08 +01:00