serial: stm32: remove infinite loop possibility in putchar function

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Rework stm32_usart_console_putchar() function in order to anticipate
the case where the character can never be sent.

Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Link: https://lore.kernel.org/r/20220419085330.1178925-2-valentin.caron@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Valentin Caron 2022-04-19 10:53:28 +02:00 • committed by Greg Kroah-Hartman

parent ec66b8cf03

commit 28fb1a92a0

2 changed files with 11 additions and 3 deletions

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12

drivers/tty/serial/stm32-usart.c

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2

drivers/tty/serial/stm32-usart.h

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