tree f2b9357156dd8332baadb9f10db5e455af7787c7
parent c65b99f046843d2455aa231747b5a07a999a9f3d
author Joerg Roedel <jroedel@suse.de> 1433172657 +0200
committer Joerg Roedel <jroedel@suse.de> 1433227592 +0200

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 <jroedel@suse.de>