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| /openbmc/linux/drivers/tty/serial/ |
| H A D | stm32-usart.c | diff 9f77d19207a0e8ba814c8ceb22e90ce7cb2aef64 Thu Mar 04 10:23:06 CST 2021 Erwan Le Ray <erwan.leray@foss.st.com> 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: 64c32eab6603 ("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>
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