From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bich HEMON Subject: [PATCH 6/9] serial: stm32: fix error handling in probe Date: Thu, 13 Jul 2017 15:08:29 +0000 Message-ID: <1499958494-19354-7-git-send-email-bich.hemon@st.com> References: <1499958494-19354-1-git-send-email-bich.hemon@st.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1499958494-19354-1-git-send-email-bich.hemon@st.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Greg Kroah-Hartman , Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre TORGUE , Jiri Slaby , "linux-serial@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Cc: Bich HEMON List-Id: linux-serial@vger.kernel.org From: Fabrice Gasnier Disable clock properly in case of error. Signed-off-by: Fabrice Gasnier Signed-off-by: Bich Hemon --- 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 9158d31..413ff49 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -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) -- 1.9.1