• Dan Williams's avatar
    dma-mapping: prevent dma dependent code from linking on !HAS_DMA archs · 1b0fac45
    Dan Williams authored
    Continuing the work started in 411f0f3e ...
    This enables code with a dma path, that compiles away, to build without
    requiring additional code factoring.  It also prevents code that calls
    dma_alloc_coherent and dma_free_coherent from linking whereas previously
    the code would hit a BUG() at run time.  Finally, it allows archs that set
    !HAS_DMA to delete their asm/dma-mapping.h file.
    Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Cc: John W. Linville <linville@tuxdriver.com>
    Cc: Kyle McMartin <kyle@parisc-linux.org>
    Cc: James Bottomley <James.Bottomley@SteelEye.com>
    Cc: Tejun Heo <htejun@gmail.com>
    Cc: Jeff Garzik <jeff@garzik.org>
    Cc: <geert@linux-m68k.org>
    Cc: <zippel@linux-m68k.org>
    Cc: <spyro@f2s.com>
    Cc: <ysato@users.sourceforge.jp>
    Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
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