Ivo Sieben b8b345bae8
TTY: Report warning when low_latency flag is wrongly used ...
When a driver has the low_latency flag set and uses the schedule_flip()
function to initiate copying data to the line discipline, a workqueue is
scheduled in but never actually flushed. This is incorrect use of the
low_latency flag (driver should not support the low_latency flag, or use
the tty_flip_buffer_push() function instead). Make sure a warning is
reported to catch incorrect use of the low_latency flag.
This patch goes with: cee4ad1ed9meltedpianoman@gmail.com >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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