The registers on the device are already accessed with readl/writel and the readchunk and writechunk are mapped into coherent DMA region. The contents of those buffers should not be changing in the middle of any transmit/receive prep call. Signed-off-by: Shaun Ruffell <sruffell@digium.com> Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com> git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9400 a0bf4364-ded3-4de4-8d8a-66a801d63aff