From: Joerg Roedel Date: Mon, 1 Jun 2015 15:30:57 +0000 (+0200) Subject: Revert "iommu/amd: Don't allocate with __GFP_ZERO in alloc_coherent" X-Git-Tag: omap-for-v4.2/wakeirq-drivers-v2^2~2^2~13^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d0ec7a19b5796aa958636eeeff072b506460501;p=pandora-kernel.git Revert "iommu/amd: Don't allocate with __GFP_ZERO in alloc_coherent" This reverts commit 5fc872c7323534e8f7dc21bab635e7a9b9659e07. The DMA-API does not strictly require that the memory returned by dma_alloc_coherent is zeroed out. For that another function (dma_zalloc_coherent) should be used. But all other x86 DMA-API implementation I checked zero out the memory, so that some drivers rely on it and break when it is not. It seems the (driver-)world is not yet ready for this change, so revert it. Signed-off-by: Joerg Roedel --- Reading git-diff-tree failed