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| author | Erwan Le Ray <erwan.leray@foss.st.com> | 2021-01-06 17:22:03 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-07 16:19:29 +0100 |
| commit | c31c3ea02e218998da19f4cd6b7d86eb6e873df4 (patch) | |
| tree | e8751aec5e523e02effa589c6181184f6fe323dc /drivers/tty | |
| parent | 97f3a0850ae42f29a4d19105274f19ceb2902313 (diff) | |
| download | linux-stable-c31c3ea02e218998da19f4cd6b7d86eb6e873df4.tar.gz linux-stable-c31c3ea02e218998da19f4cd6b7d86eb6e873df4.tar.bz2 linux-stable-c31c3ea02e218998da19f4cd6b7d86eb6e873df4.zip | |
serial: stm32: update transmission complete error message in shutdown
The transmission complete error message provides the status of the
ISR_USART_TC bit. This bit, when set, indicates that the transmission
has not been completed.
The bit status indication is not a very understandable information.
The error message sent on console should indicate that the transmission is
not complete, instead of providing USART_TC bit status.
Update the error message and add a comment for better understanding.
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Link: https://lore.kernel.org/r/20210106162203.28854-9-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/stm32-usart.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 9d73f6976586..6a9a5ef5f5ba 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -687,8 +687,9 @@ static void stm32_usart_shutdown(struct uart_port *port) isr, (isr & USART_SR_TC), 10, 100000); + /* Send the TC error message only when ISR_TC is not set */ if (ret) - dev_err(port->dev, "transmission complete not set\n"); + dev_err(port->dev, "Transmission is not complete\n"); stm32_usart_clr_bits(port, ofs->cr1, val); |