From: Erwan Le Ray <erwan.leray@foss.st.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>, Rob Herring <robh+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <linux-serial@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Erwan Le Ray <erwan.leray@foss.st.com>,
Fabrice Gasnier <fabrice.gasnier@foss.st.com>,
Valentin Caron <valentin.caron@foss.st.com>
Subject: [PATCH v2 8/8] serial: stm32: update transmission complete error message in shutdown
Date: Wed, 6 Jan 2021 17:22:03 +0100 [thread overview]
Message-ID: <20210106162203.28854-9-erwan.leray@foss.st.com> (raw)
In-Reply-To: <20210106162203.28854-1-erwan.leray@foss.st.com>
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>
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);
--
2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Erwan Le Ray <erwan.leray@foss.st.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>, Rob Herring <robh+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: devicetree@vger.kernel.org,
Valentin Caron <valentin.caron@foss.st.com>,
Erwan Le Ray <erwan.leray@foss.st.com>,
linux-kernel@vger.kernel.org,
Fabrice Gasnier <fabrice.gasnier@foss.st.com>,
linux-serial@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 8/8] serial: stm32: update transmission complete error message in shutdown
Date: Wed, 6 Jan 2021 17:22:03 +0100 [thread overview]
Message-ID: <20210106162203.28854-9-erwan.leray@foss.st.com> (raw)
In-Reply-To: <20210106162203.28854-1-erwan.leray@foss.st.com>
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>
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);
--
2.17.1
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next prev parent reply other threads:[~2021-01-06 16:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 16:21 [PATCH 0/7] STM32 uart cleanup and improvements Erwan Le Ray
2021-01-06 16:21 ` Erwan Le Ray
2021-01-06 16:21 ` [PATCH v2 1/8] serial: stm32: fix DMA initialization error handling Erwan Le Ray
2021-01-06 16:21 ` Erwan Le Ray
2021-01-06 16:21 ` [PATCH v2 2/8] serial: stm32: fix code cleaning warnings and checks Erwan Le Ray
2021-01-06 16:21 ` Erwan Le Ray
2021-01-11 9:58 ` Jiri Slaby
2021-01-11 9:58 ` Jiri Slaby
2021-01-12 10:02 ` Erwan LE RAY
2021-01-12 10:02 ` Erwan LE RAY
2021-01-12 10:24 ` Greg Kroah-Hartman
2021-01-12 10:24 ` Greg Kroah-Hartman
2021-01-06 16:21 ` [PATCH v2 3/8] serial: stm32: add "_usart" prefix in functions name Erwan Le Ray
2021-01-06 16:21 ` Erwan Le Ray
2021-01-06 16:21 ` [PATCH v2 4/8] serial: stm32: add author Erwan Le Ray
2021-01-06 16:21 ` Erwan Le Ray
2021-01-11 9:59 ` Jiri Slaby
2021-01-11 9:59 ` Jiri Slaby
2021-01-06 16:22 ` [PATCH v2 5/8] dt-bindings: serial: stm32: update rts-gpios and cts-gpios Erwan Le Ray
2021-01-06 16:22 ` Erwan Le Ray
2021-01-06 16:22 ` [PATCH v2 6/8] serial: stm32: update conflicting RTS/CTS config comment Erwan Le Ray
2021-01-06 16:22 ` Erwan Le Ray
2021-01-06 16:22 ` [PATCH v2 7/8] serial: stm32: clean probe and remove port deinit Erwan Le Ray
2021-01-06 16:22 ` Erwan Le Ray
2021-01-06 16:22 ` Erwan Le Ray [this message]
2021-01-06 16:22 ` [PATCH v2 8/8] serial: stm32: update transmission complete error message in shutdown Erwan Le Ray
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