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* [PATCH V2] tty: serial: meson: Fix the compile link error reported by kernel test robot
@ 2022-02-28  9:03 Yu Tu
  2022-02-28  9:52 ` Neil Armstrong
  0 siblings, 1 reply; 4+ messages in thread
From: Yu Tu @ 2022-02-28  9:03 UTC (permalink / raw)
  To: linux-serial, linux-arm-kernel, linux-amlogic, linux-kernel
  Cc: Greg Kroah-Hartman, Jiri Slaby, Neil Armstrong, Kevin Hilman,
	Jerome Brunet, Martin Blumenstingl, Yu Tu, kernel test robot,
	Dan Carpenter

Describes the calculation of the UART baud rate clock using a clock
frame. Forgot to add in Kconfig kernel test Robot compilation error
due to COMMON_CLK dependency.

Fixes: 44023b8e1f14 ("tty: serial:meson: Describes the calculation of the UART baud rate clock using a clock frame“)
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yu Tu <yu.tu@amlogic.com>
---
 drivers/tty/serial/Kconfig      |  1 +
 drivers/tty/serial/meson_uart.c | 37 +++++++++++++++++++++++----------
 2 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index e952ec5c7a7c..a0f2b82fc18b 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -200,6 +200,7 @@ config SERIAL_KGDB_NMI
 config SERIAL_MESON
 	tristate "Meson serial port support"
 	depends on ARCH_MESON || COMPILE_TEST
+	depends on COMMON_CLK
 	select SERIAL_CORE
 	help
 	  This enables the driver for the on-chip UARTs of the Amlogic
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index bf6be5468aaf..972f210f3492 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -780,28 +780,37 @@ static int meson_uart_probe(struct platform_device *pdev)
 		return ret;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
+	if (irq < 0) {
+		ret = irq;
+		goto err_out_clk_disable;
+	}
 
 	of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize);
 
 	if (meson_ports[pdev->id]) {
 		dev_err(&pdev->dev, "port %d already allocated\n", pdev->id);
-		return -EBUSY;
+		ret = -EBUSY;
+		goto err_out_clk_disable;
 	}
 
 	port = devm_kzalloc(&pdev->dev, sizeof(struct uart_port), GFP_KERNEL);
-	if (!port)
-		return -ENOMEM;
+	if (!port) {
+		ret = -ENOMEM;
+		goto err_out_clk_disable;
+	}
 
 	port->membase = devm_ioremap_resource(&pdev->dev, res_mem);
-	if (IS_ERR(port->membase))
-		return PTR_ERR(port->membase);
+	if (IS_ERR(port->membase)) {
+		ret = PTR_ERR(port->membase);
+		goto err_out_clk_disable;
+	}
 
 	private_data = devm_kzalloc(&pdev->dev, sizeof(*private_data),
 				    GFP_KERNEL);
-	if (!private_data)
-		return -ENOMEM;
+	if (!private_data) {
+		ret = -ENOMEM;
+		goto err_out_clk_disable;
+	}
 
 	if (device_get_match_data(&pdev->dev))
 		private_data->use_xtal_clk = true;
@@ -822,7 +831,7 @@ static int meson_uart_probe(struct platform_device *pdev)
 
 	ret = meson_uart_probe_clocks(port);
 	if (ret)
-		return ret;
+		goto err_out_clk_disable;
 
 	meson_ports[pdev->id] = port;
 	platform_set_drvdata(pdev, port);
@@ -831,9 +840,15 @@ static int meson_uart_probe(struct platform_device *pdev)
 	meson_uart_reset(port);
 
 	ret = uart_add_one_port(&meson_uart_driver, port);
-	if (ret)
+	if (ret) {
 		meson_ports[pdev->id] = NULL;
+		goto err_out_clk_disable;
+	}
+
+	return 0;
 
+err_out_clk_disable:
+	clk_disable_unprepare(pclk);
 	return ret;
 }
 

base-commit: c2faf737abfb10f88f2d2612d573e9edc3c42c37
-- 
2.33.1


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^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2022-02-28 21:22 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-02-28  9:03 [PATCH V2] tty: serial: meson: Fix the compile link error reported by kernel test robot Yu Tu
2022-02-28  9:52 ` Neil Armstrong
2022-02-28 13:35   ` Yu Tu
2022-02-28 21:22   ` Greg Kroah-Hartman

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