x86: isolate coherent mapping functions

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i386 implements the declare coherent memory API, and x86_64 does not
it is reflected in pieces of dma_alloc_coherent and dma_free_coherent.
Those pieces are isolated in separate functions, that are declared
as empty macros in x86_64. This way we can make the code the same.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Glauber Costa 2008-04-08 13:20:58 -03:00 • committed by Ingo Molnar

parent 8e8edc6401

commit d09d815c1b

2 changed files with 45 additions and 17 deletions

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51

arch/x86/kernel/pci-dma_32.c

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11

arch/x86/kernel/pci-dma_64.c

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