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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>
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@ -687,8 +687,9 @@ static void stm32_usart_shutdown(struct uart_port *port)
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isr, (isr & USART_SR_TC),
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10, 100000);
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/* Send the TC error message only when ISR_TC is not set */
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if (ret)
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dev_err(port->dev, "transmission complete not set\n");
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dev_err(port->dev, "Transmission is not complete\n");
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stm32_usart_clr_bits(port, ofs->cr1, val);
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