From: Thomas Petazzoni Date: Fri, 16 Jan 2015 16:11:27 +0000 (+0100) Subject: ARM: mvebu: completely disable hardware I/O coherency X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~230^2~2^2~1 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f1e8ee28660018a935c7576b9af8ffe1feab54c;p=pandora-kernel.git ARM: mvebu: completely disable hardware I/O coherency The current hardware I/O coherency is known to cause problems with DMA coherent buffers, as it still requires explicit I/O synchronization barriers, which is not compatible with the semantics expected by the Linux DMA coherent buffers API. So, in order to have enough time to validate a new solution based on automatic I/O synchronization barriers, this commit disables hardware I/O coherency entirely. Future patches will re-enable it. Signed-off-by: Thomas Petazzoni Cc: # v3.8+ Signed-off-by: Andrew Lunn --- Reading git-diff-tree failed