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| author | zbb <zbb@FreeBSD.org> | 2015-07-08 13:52:59 +0000 |
|---|---|---|
| committer | zbb <zbb@FreeBSD.org> | 2015-07-08 13:52:59 +0000 |
| commit | ad70ced005b6c89457096f744618bb95ba71f003 (patch) | |
| tree | 76cdd2360c3f68817bb3850563b05804387c2a80 /contrib/llvm/tools/clang/lib/Serialization/ASTWriterDecl.cpp | |
| parent | 79ef161338c558af0dbe0928d4315be38a814695 (diff) | |
| download | FreeBSD-src-ad70ced005b6c89457096f744618bb95ba71f003.zip FreeBSD-src-ad70ced005b6c89457096f744618bb95ba71f003.tar.gz | |
Add memory barrier to bus_dmamap_sync()
On platforms which are fully IO-coherent, the map might be null.
We need to guarantee that all data is observable after the
sync operation is called. Add a memory barrier to ensure that on ARM.
Reviewed by: andrew, kib
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3012
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Serialization/ASTWriterDecl.cpp')
0 files changed, 0 insertions, 0 deletions
