Blackfin Serial Driver: Fix bug - update tx dma buffer tail before wake up processes.
authorSonic Zhang <sonic.zhang@analog.com>
Mon, 25 Feb 2008 07:19:09 +0000 (15:19 +0800)
committerBryan Wu <cooloney@kernel.org>
Mon, 25 Feb 2008 07:19:09 +0000 (15:19 +0800)
Also make rx dma buffer work as a loop.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

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