Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752486AbdFZMuu convert rfc822-to-8bit (ORCPT ); Mon, 26 Jun 2017 08:50:50 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:36791 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752365AbdFZMuY (ORCPT ); Mon, 26 Jun 2017 08:50:24 -0400 From: Bich HEMON 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 Subject: [PATCH 13/20] serial: stm32: fix error handling in probe Thread-Topic: [PATCH 13/20] serial: stm32: fix error handling in probe Thread-Index: AQHS7nqde5z4H/1P3kqM5pm5TXa1vA== Date: Mon, 26 Jun 2017 12:49:14 +0000 Message-ID: <1498481318-1894-14-git-send-email-bich.hemon@st.com> References: <1498481318-1894-1-git-send-email-bich.hemon@st.com> In-Reply-To: <1498481318-1894-1-git-send-email-bich.hemon@st.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.50] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-06-26_09:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1237 Lines: 46 From: Bich Hemon Signed-off-by: Fabrice Gasnier --- 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