]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
introduce DMA_MASK_NONE as a signal for unable to do DMA
authorJames Bottomley <James.Bottomley@SteelEye.com>
Tue, 16 Oct 2007 08:23:55 +0000 (01:23 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 16 Oct 2007 16:42:50 +0000 (09:42 -0700)
commit32e8f70230c0c417490787b3f48b6ed6c48e7ec9
tree54ef9f6c8960ab2a9634d0d82d69d6049bc6f3fb
parent64da82efae0d7b5f7c478021840fd329f76d965d
introduce DMA_MASK_NONE as a signal for unable to do DMA

Some devices are incapable of DMA and need to be recognised as such.
Introduce a NONE dma mask to facilitate this plus an inline function:
is_device_dma_capable() to check this.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Natalie Protasevich <protasnb@gmail.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/dma-mapping.h