Sonic Zhang 56f5de8fe7 Blackfin Serial Driver: Fix bug - update tx dma buffer tail before wake up processes.
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>
2008-02-25 15:19:09 +08:00
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