From: Bich HEMON <bich.hemon@st.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre TORGUE <alexandre.torgue@st.com>,
Jiri Slaby <jslaby@suse.com>,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: Bich HEMON <bich.hemon@st.com>
Subject: [PATCH] serial: stm32: fix pio transmit timeout
Date: Mon, 31 Jul 2017 09:31:52 +0000 [thread overview]
Message-ID: <1501493505-27933-1-git-send-email-bich.hemon@st.com> (raw)
From: Gerald Baeza <gerald.baeza@st.com>
100µs was too short for low speed transmission
(9600bps)
Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Bich Hemon <bich.hemon@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 72c0ec1..b16e7e7 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -203,7 +203,7 @@ 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
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reply other threads:[~2017-07-31 9:31 UTC|newest]
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