[PATCH 13/20] serial: stm32: fix error handling in probe
From: Bich HEMON <hidden>
Date: 2017-06-26 12:50:50
Also in:
linux-devicetree, linux-serial, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
From: Bich Hemon <redacted> Signed-off-by: Fabrice Gasnier <redacted> --- drivers/tty/serial/stm32-usart.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index c54b89d..a62fc95 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c@@ -779,8 +779,10 @@ static int stm32_init_port(struct stm32_port *stm32port, return ret; stm32port->port.uartclk = clk_get_rate(stm32port->clk); - if (!stm32port->port.uartclk) + if (!stm32port->port.uartclk) { + clk_disable_unprepare(stm32port->clk); ret = -EINVAL; + } return ret; }
@@ -964,7 +966,7 @@ static int stm32_serial_probe(struct platform_device *pdev) ret = uart_add_one_port(&stm32_usart_driver, &stm32port->port); if (ret) - return ret; + goto err_uninit; ret = stm32_of_dma_rx_probe(stm32port, pdev); if (ret)
@@ -977,6 +979,11 @@ static int stm32_serial_probe(struct platform_device *pdev) platform_set_drvdata(pdev, &stm32port->port); return 0; + +err_uninit: + clk_disable_unprepare(stm32port->clk); + + return ret; } static int stm32_serial_remove(struct platform_device *pdev)
--
1.9.1