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commitc957f8b3e2upstream. This patch adds a parameter in the SafeXcel ahash request structure to keep track of the number of SG entries mapped. This allows not to call dma_unmap_sg() when dma_map_sg() wasn't called in the first place. This also removes a warning when the debugging of the DMA-API is enabled in the kernel configuration: "DMA-API: device driver tries to free DMA memory it has not allocated". Fixes:1b44c5a60c("crypto: inside-secure - add SafeXcel EIP197 crypto engine driver") Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.