crypto: ccp - Release dma channels before dmaengine unrgister
authorKoba Ko <koba.ko@canonical.com>
Thu, 1 Sep 2022 14:47:12 +0000 (22:47 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 26 Oct 2022 10:35:25 +0000 (12:35 +0200)
commit93538944ab0b5860c86c9d1601d3954f82ab8ca5
tree329ba0464d00f65c9f0230e96f70fb823fe7bde3
parent779a9930f3e152c82699feb389a0e6d6644e747e
crypto: ccp - Release dma channels before dmaengine unrgister

[ Upstream commit 68dbe80f5b510c66c800b9e8055235c5b07e37d1 ]

A warning is shown during shutdown,

__dma_async_device_channel_unregister called while 2 clients hold a reference
WARNING: CPU: 15 PID: 1 at drivers/dma/dmaengine.c:1110 __dma_async_device_channel_unregister+0xb7/0xc0

Call dma_release_channel for occupied channles before dma_async_device_unregister.

Fixes: 54cce8ecb925 ("crypto: ccp - ccp_dmaengine_unregister release dma channels")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Koba Ko <koba.ko@canonical.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/crypto/ccp/ccp-dmaengine.c