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include/linux/dma-mapping.h: add dma_zalloc_coherent()
authorAndrew Morton <akpm@linux-foundation.org>
Wed, 2 Nov 2011 20:39:33 +0000 (13:39 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 2 Nov 2011 23:07:02 +0000 (16:07 -0700)
Lots of driver code does a dma_alloc_coherent() and then zeroes out the
memory with a memset.  Make it easy for them.

Cc: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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