diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-10-17 14:08:09 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-19 19:47:38 -0700 |
| commit | d3755f5e6cd222cd5aff949228d32aa8446023a5 (patch) | |
| tree | 56b68cd0b26533e32217333e5e0ff4cfa460ec63 /mm | |
| parent | 85baf542d54ec321642194b0ebfa7316e3190dc2 (diff) | |
tty: xuartps: Force enable the UART in xuartps_console_write
It is possible that under certain circumstances xuartps_console_write is entered
while the UART disabled. When this happens the code will busy loop in
xuartps_console_putchar, since the character is never written and the TXEMPTY
flag is never set. The result is a system lockup. This patch force enables the
UART for the duration of xuartps_console_write to avoid this.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions