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serial: stm32: fix error handling in probe

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Disable clock properly in case of error.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabrice Gasnier 2017-07-13 15:08:29 +00:00 committed by Greg Kroah-Hartman
parent 35abe98f15
commit ada8004374
1 changed files with 9 additions and 2 deletions
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11
drivers/tty/serial/stm32-usart.c
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@ -678,8 +678,10 @@ 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;
}
@ -865,7 +867,7 @@ 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)
@ -878,6 +880,11 @@ 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)