Changes in v3:
  - Split into three patches.
  - Confirm the empty TX only after sending each character.

Changes in v2:
  - split into two patches

Masahiro Yamada (3):
  serial: 8250_early: do not save and restore IER in write callback
  serial: 8250_early: confirm empty transmitter after sending characters
  serial: 8250_early: squash wait_for_xmitr() into serial_putc()

 drivers/tty/serial/8250/8250_early.c | 24 ++++--------------------
 1 file changed, 4 insertions(+), 20 deletions(-)

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1.9.1