From patchwork Wed Jan 16 19:05:43 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Prisk X-Patchwork-Id: 1993271 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 138E33FE33 for ; Wed, 16 Jan 2013 19:09:29 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TvYJL-0001U7-7S; Wed, 16 Jan 2013 19:06:07 +0000 Received: from server.prisktech.co.nz ([115.188.14.127]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TvYIh-0001Ok-Ds for linux-arm-kernel@lists.infradead.org; Wed, 16 Jan 2013 19:05:29 +0000 Received: from localhost.localdomain (unknown [192.168.0.102]) by server.prisktech.co.nz (Postfix) with ESMTP id 3A77CFC08FF; Thu, 17 Jan 2013 08:05:23 +1300 (NZDT) From: Tony Prisk To: Greg KH Subject: [PATCH 4/4 v3] serial: tty: Cleanup code using devm_ function Date: Thu, 17 Jan 2013 08:05:43 +1300 Message-Id: <1358363143-7154-5-git-send-email-linux@prisktech.co.nz> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1358363143-7154-1-git-send-email-linux@prisktech.co.nz> References: <1358363143-7154-1-git-send-email-linux@prisktech.co.nz> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130116_140527_907407_A38A8277 X-CRM114-Status: GOOD ( 12.65 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: vt8500-wm8505-linux-kernel@googlegroups.com, Tony Prisk , linux@arm.linux.org.uk, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Convert the last memory allocation (vt8500_port) to use devm_kzalloc and remove the fail path cleanup code from vt8500_serial_probe. Reorder iomem mapping above clk_enable to simplify fail code. The clock is only enabled if all other resources are available. Signed-off-by: Tony Prisk --- drivers/tty/serial/vt8500_serial.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c index 7f9e578..1fc6f3d 100644 --- a/drivers/tty/serial/vt8500_serial.c +++ b/drivers/tty/serial/vt8500_serial.c @@ -589,7 +589,8 @@ static int vt8500_serial_probe(struct platform_device *pdev) return -EBUSY; } - vt8500_port = kzalloc(sizeof(struct vt8500_port), GFP_KERNEL); + vt8500_port = devm_kzalloc(&pdev->dev, sizeof(struct vt8500_port), + GFP_KERNEL); if (!vt8500_port) return -ENOMEM; @@ -600,14 +601,13 @@ static int vt8500_serial_probe(struct platform_device *pdev) vt8500_port->clk = of_clk_get(pdev->dev.of_node, 0); if (IS_ERR(vt8500_port->clk)) { dev_err(&pdev->dev, "failed to get clock\n"); - ret = -EINVAL; - goto err; + return -EINVAL; } ret = clk_prepare_enable(vt8500_port->clk); if (ret) { dev_err(&pdev->dev, "failed to enable clock\n"); - goto err; + return ret; } vt8500_port->uart.type = PORT_VT8500; @@ -631,10 +631,6 @@ static int vt8500_serial_probe(struct platform_device *pdev) platform_set_drvdata(pdev, vt8500_port); return 0; - -err: - kfree(vt8500_port); - return ret; } static int vt8500_serial_remove(struct platform_device *pdev) @@ -644,7 +640,6 @@ static int vt8500_serial_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); clk_disable_unprepare(vt8500_port->clk); uart_remove_one_port(&vt8500_uart_driver, &vt8500_port->uart); - kfree(vt8500_port); return 0; }