diff options
| author | Gabriel Matni <[email protected]> | 2018-03-22 19:15:12 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2018-03-22 21:27:44 +0100 |
| commit | c685af1108d7c303f0b901413405d68eaeac4477 (patch) | |
| tree | ea0d6e8358debb193b8eb233a0f019fe6ff152db /lib/test-string_helpers.c | |
| parent | 7693b331d033ecda61097007330d3e7461ff7f27 (diff) | |
serial: mvebu-uart: fix tx lost characters
Fixes missing characters on kernel console at low baud rates (i.e.9600).
The driver should poll TX_RDY or TX_FIFO_EMP instead of TX_EMP to ensure
that the transmitter holding register (THR) is ready to receive a new byte.
TX_EMP tells us when it is possible to send a break sequence via
SND_BRK_SEQ. While this also indicates that both the THR and the TSR are
empty, it does not guarantee that a new byte can be written just yet.
Fixes: 30530791a7a0 ("serial: mvebu-uart: initial support for Armada-3700 serial port")
Reviewed-by: Miquel Raynal <[email protected]>
Acked-by: Gregory CLEMENT <[email protected]>
Signed-off-by: Gabriel Matni <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'lib/test-string_helpers.c')
0 files changed, 0 insertions, 0 deletions