From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752906AbdBCMYp (ORCPT ); Fri, 3 Feb 2017 07:24:45 -0500 Received: from mail-pf0-f196.google.com ([209.85.192.196]:35748 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752169AbdBCMYn (ORCPT ); Fri, 3 Feb 2017 07:24:43 -0500 From: Arvind Yadav To: tomi.valkeinen@ti.com, b.zolnierkie@samsung.com Cc: linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] omapfb: dss: Handle return error in dss_init_ports. Date: Fri, 3 Feb 2017 17:53:45 +0530 Message-Id: <1486124625-23454-1-git-send-email-arvind.yadav.cs@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Here, dss_init_ports is not handling return error form dpi_init_port and sdi_init_port. Now dss_init_ports is returning always 0. And it's making below code as a dead code. static int dss_bind(struct device *dev) { . . r = dss_init_ports(pdev); //dss_init_ports will return always 0 if (r)// This condition will always false goto err_init_ports; //Dead Code . . } This change is to handle return error from dpi_init_port and sdi_init_port. Also, It will remove dead code from function 'dss_bind'. Signed-off-by: Arvind Yadav --- drivers/video/fbdev/omap2/omapfb/dss/dss.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss.c b/drivers/video/fbdev/omap2/omapfb/dss/dss.c index 47d7f69..15a0dab 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/dss.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/dss.c @@ -946,6 +946,7 @@ static int dss_init_ports(struct platform_device *pdev) struct device_node *parent = pdev->dev.of_node; struct device_node *port; int r; + int ret = 0; if (parent == NULL) return 0; @@ -972,17 +973,17 @@ static int dss_init_ports(struct platform_device *pdev) switch (port_type) { case OMAP_DISPLAY_TYPE_DPI: - dpi_init_port(pdev, port); + ret = dpi_init_port(pdev, port); break; case OMAP_DISPLAY_TYPE_SDI: - sdi_init_port(pdev, port); + ret = sdi_init_port(pdev, port); break; default: break; } } while ((port = omapdss_of_get_next_port(parent, port)) != NULL); - return 0; + return ret; } static void dss_uninit_ports(struct platform_device *pdev) -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arvind Yadav Date: Fri, 03 Feb 2017 12:35:45 +0000 Subject: [PATCH] omapfb: dss: Handle return error in dss_init_ports. Message-Id: <1486124625-23454-1-git-send-email-arvind.yadav.cs@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: tomi.valkeinen@ti.com, b.zolnierkie@samsung.com Cc: linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Here, dss_init_ports is not handling return error form dpi_init_port and sdi_init_port. Now dss_init_ports is returning always 0. And it's making below code as a dead code. static int dss_bind(struct device *dev) { . . r = dss_init_ports(pdev); //dss_init_ports will return always 0 if (r)// This condition will always false goto err_init_ports; //Dead Code . . } This change is to handle return error from dpi_init_port and sdi_init_port. Also, It will remove dead code from function 'dss_bind'. Signed-off-by: Arvind Yadav --- drivers/video/fbdev/omap2/omapfb/dss/dss.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss.c b/drivers/video/fbdev/omap2/omapfb/dss/dss.c index 47d7f69..15a0dab 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/dss.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/dss.c @@ -946,6 +946,7 @@ static int dss_init_ports(struct platform_device *pdev) struct device_node *parent = pdev->dev.of_node; struct device_node *port; int r; + int ret = 0; if (parent = NULL) return 0; @@ -972,17 +973,17 @@ static int dss_init_ports(struct platform_device *pdev) switch (port_type) { case OMAP_DISPLAY_TYPE_DPI: - dpi_init_port(pdev, port); + ret = dpi_init_port(pdev, port); break; case OMAP_DISPLAY_TYPE_SDI: - sdi_init_port(pdev, port); + ret = sdi_init_port(pdev, port); break; default: break; } } while ((port = omapdss_of_get_next_port(parent, port)) != NULL); - return 0; + return ret; } static void dss_uninit_ports(struct platform_device *pdev) -- 1.9.1