serial: stm32: fix rx error handling

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- Fixes parity and framing error bit by clearing parity and framing error
  flag. The current implementation doesn't clear the error bits when an
  error is detected.
- Fixes the incorrect name of framing error clearing flag in header file.
- Fixes misalignement between data frame and errors status. The status
  read for "n" frame was the status of "n+1" frame".
- Fixes break detection was not triggered by the expected register.

Fixes: 48a6092fb4 ("serial: stm32-usart: Add STM32 USART Driver")
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Erwan Le Ray 2019-05-21 17:45:42 +02:00 • committed by Greg Kroah-Hartman

parent c8a9d04394

commit 4f01d833fd

2 changed files with 37 additions and 27 deletions

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54

drivers/tty/serial/stm32-usart.c

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10

drivers/tty/serial/stm32-usart.h

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