From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Thu, 13 Aug 2015 15:04:03 +0000 Subject: provide more common DMA API functions Message-Id: <1439478248-15183-1-git-send-email-hch@lst.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: akpm@linux-foundation.org Cc: arnd@arndb.de, linux@arm.linux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, ysato@users.sourceforge.jp, monstr@monstr.eu, jonas@southpole.se, cmetcalf@ezchip.com, gxt@mprc.pku.edu.cn, x86@kernel.org, linux-alpha@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Since 2009 we have a nice asm-generic header implementing lots of DMA API functions for architectures using struct dma_map_ops, but unfortunately it's still missing a lot of APIs that all architectures still have to duplicate. This series consolidates the remaining functions, although we still need arch opt outs for two of them as a few architectures have very non-standard implementations.