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[06/11] serial: stm32: clock disabling management

Message ID 1473957763-30629-7-git-send-email-alexandre.torgue@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alexandre TORGUE Sept. 15, 2016, 4:42 p.m. UTC 
Keep the clock enabled at the end of stm32_init_port
but disable it in stm32_serial_remove.
Note that stm32_pm function is there to manage the
clock at runtime.

Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
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Patch

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index ab294b9..520e7de 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -487,8 +487,6 @@  static int stm32_init_port(struct stm32_port *stm32port,
 	if (!stm32port->port.uartclk)
 		ret = -EINVAL;
 
-	clk_disable_unprepare(stm32port->clk);
-
 	return ret;
 }
 
@@ -557,6 +555,9 @@  static int stm32_serial_probe(struct platform_device *pdev)
 static int stm32_serial_remove(struct platform_device *pdev)
 {
 	struct uart_port *port = platform_get_drvdata(pdev);
+	struct stm32_port *stm32_port = to_stm32_port(port);
+
+	clk_disable_unprepare(stm32_port->clk);
 
 	return uart_remove_one_port(&stm32_usart_driver, port);
 }