Messages in this thread Patch in this message | | | From | Bich HEMON <> | Subject | [PATCH 06/20] serial: stm32: fix pio transmit timeout | Date | Mon, 26 Jun 2017 12:49:11 +0000 |
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From: Bich Hemon <bich.hemon@st.com>
100µs was too short for low speed transmission (9600bps)
Signed-off-by: Gerald Baeza <gerald.baeza@st.com> --- drivers/tty/serial/stm32-usart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 3ce0f7a..79ac167 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -247,7 +247,7 @@ static void stm32_transmit_chars_pio(struct uart_port *port) ret = readl_relaxed_poll_timeout_atomic(port->membase + ofs->isr, isr, (isr & USART_SR_TXE), - 10, 100); + 10, 100000); if (ret) dev_err(port->dev, "tx empty not set\n"); -- 1.9.1 | |