0999f638a5
[ Upstream commit 875aac8a46424e5b73a9ff7f40b83311b609e407 ] In async_tx_test_ack(), it uses flags in struct dma_async_tx_descriptor to check the ACK status. As hidma reuses the descriptor in a free list when hidma_prep_dma_*(memcpy/memset) is called, the flag will keep ACKed if the descriptor has been used before. This will cause a BUG_ON in async_tx_quiesce(). kernel BUG at crypto/async_tx/async_tx.c:282! Internal error: Oops - BUG: 0 1 SMP ... task: ffff8017dd3ec000 task.stack: ffff8017dd3e8000 PC is at async_tx_quiesce+0x54/0x78 [async_tx] LR is at async_trigger_callback+0x98/0x110 [async_tx] This patch initializes flags in dma_async_tx_descriptor by the flags passed from the caller when hidma_prep_dma_*(memcpy/memset) is called. Cc: Joey Zheng <yu.zheng@hxt-semitech.com> Reviewed-by: Sinan Kaya <okaya@kernel.org> Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.