linux-kernel - [PATCH v2 7/8] serial: stm32: clean probe and remove port deinit

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Date:   Wed, 6 Jan 2021 17:22:02 +0100
From:   Erwan Le Ray <erwan.leray@...s.st.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
CC:     <linux-serial@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Erwan Le Ray <erwan.leray@...s.st.com>,
        Fabrice Gasnier <fabrice.gasnier@...s.st.com>,
        Valentin Caron <valentin.caron@...s.st.com>,
        Etienne Carriere <etienne.carriere@...s.st.com>
Subject: [PATCH v2 7/8] serial: stm32: clean probe and remove port deinit

Clean probe and remove port deinit by moving clk_disable_unprepare in a
new dedicated deinit_port function.

Signed-off-by: Erwan Le Ray <erwan.leray@...s.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@...s.st.com>

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 0d6c7f3375f0..9d73f6976586 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -970,6 +970,11 @@ static const struct uart_ops stm32_uart_ops = {
 	.verify_port	= stm32_usart_verify_port,
 };
 
+static void stm32_usart_deinit_port(struct stm32_port *stm32port)
+{
+	clk_disable_unprepare(stm32port->clk);
+}
+
 static int stm32_usart_init_port(struct stm32_port *stm32port,
 				 struct platform_device *pdev)
 {
@@ -1279,7 +1284,7 @@ static int stm32_usart_serial_probe(struct platform_device *pdev)
 		device_init_wakeup(&pdev->dev, false);
 
 err_uninit:
-	clk_disable_unprepare(stm32port->clk);
+	stm32_usart_deinit_port(stm32port);
 
 	return ret;
 }
@@ -1318,7 +1323,7 @@ static int stm32_usart_serial_remove(struct platform_device *pdev)
 		device_init_wakeup(&pdev->dev, false);
 	}
 
-	clk_disable_unprepare(stm32_port->clk);
+	stm32_usart_deinit_port(stm32_port);
 
 	err = uart_remove_one_port(&stm32_usart_driver, port);
 
-- 
2.17.1