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| author | Peter Crosthwaite <peter.crosthwaite@xilinx.com> | 2014-01-06 10:16:40 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-01-08 19:07:21 +0000 |
| commit | 38acd64b1cc8b9589e155d16ba4a0ccf9dc95ae4 (patch) | |
| tree | 17f8a3309f283f2ccb971924bcfaf36809cc7588 /target-cris | |
| parent | 1e5d8cacb7fe509aa793ad844105fbc4fe02e015 (diff) | |
char/cadence_uart: Implement Tx flow control
If the UART back-end blocks, buffer in the Tx FIFO to try again later.
This stops the IO-thread busy waiting on char back-ends (which causes
all sorts of performance problems).
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 4bea048b3ab38425701d82ccc1ab92545c26b79c.1388626249.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-cris')
0 files changed, 0 insertions, 0 deletions