[V2,0/3] serial: stm32: add earlycon and polling mode

Message

Valentin Caron April 8, 2022, 12:26 p.m. UTC

- Add support of early console and polling mode in stm32-usart driver.
- Avoid a possible infinite loop in putchar function.

Changes since v1:
- Fix warning "unused variable 'ret'"

Valentin Caron (3):
  serial: stm32: remove infinite loop possibility in putchar function
  serial: stm32: add KGDB support
  serial: stm32: add earlycon support

 .../admin-guide/kernel-parameters.txt         |   6 ++
 drivers/tty/serial/Kconfig                    |   1 +
 drivers/tty/serial/stm32-usart.c              | 100 +++++++++++++++++-
 drivers/tty/serial/stm32-usart.h              |   2 +
 4 files changed, 104 insertions(+), 5 deletions(-)