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Erwan Le Ray 9f77d19207 serial: stm32: add FIFO flush when port is closed 
Transmission complete error is sent when ISR_TC is not set. If port closure
is requested despite data in TDR / TX FIFO has not been sent (because of
flow control), ISR_TC is not set and error message is sent on port closure
but also when a new port is opened.

Flush the data when port is closed, so the error isn't printed twice upon
next port opening.

Fixes: 64c32eab66 ("serial: stm32: Add support of TC bit status check")
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Link: https://lore.kernel.org/r/20210304162308.8984-12-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-10 09:34:11 +01:00
arch tty: do not check tty_unregister_driver's return value 2021-03-10 09:34:09 +01:00
block
certs
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Documentation dt-bindings: serial: samsung: add DMA properties 2021-03-10 09:34:10 +01:00
drivers serial: stm32: add FIFO flush when port is closed 2021-03-10 09:34:11 +01:00
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include tty: serial: samsung_tty: Add support for Apple UARTs 2021-03-10 09:34:10 +01:00
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net net: nfc: nci: drop nci_uart_default_recv 2021-03-10 09:34:07 +01:00
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README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.