From patchwork Tue Jun 16 10:16:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 6617191 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3F7FFC0020 for ; Tue, 16 Jun 2015 10:26:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3FD8020792 for ; Tue, 16 Jun 2015 10:26:50 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 492B120780 for ; Tue, 16 Jun 2015 10:26:49 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z4o2I-0004LV-WD; Tue, 16 Jun 2015 10:24:07 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z4nvU-0006DW-0K for linux-arm-kernel@lists.infradead.org; Tue, 16 Jun 2015 10:17:07 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id t5GAGcVA011105; Tue, 16 Jun 2015 05:16:38 -0500 Received: from DLEE70.ent.ti.com (dlee70.ent.ti.com [157.170.170.113]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t5GAGcp2016117; Tue, 16 Jun 2015 05:16:38 -0500 Received: from dflp32.itg.ti.com (10.64.6.15) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.224.2; Tue, 16 Jun 2015 05:16:38 -0500 Received: from deskari.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t5GAGVrb016197; Tue, 16 Jun 2015 05:16:37 -0500 From: Tomi Valkeinen To: Laurent Pinchart , , , Subject: [PATCH 3/7] OMAPDSS: fix dss_init_ports error handling Date: Tue, 16 Jun 2015 13:16:25 +0300 Message-ID: <1434449789-13812-4-git-send-email-tomi.valkeinen@ti.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1434449789-13812-1-git-send-email-tomi.valkeinen@ti.com> References: <1434449789-13812-1-git-send-email-tomi.valkeinen@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150616_031704_203083_2AAFAFBB X-CRM114-Status: UNSURE ( 8.80 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.5 (-----) Cc: Tomi Valkeinen X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The return value of dss_init_ports() is not handled at all, causing crashes later if the call failed. This patch adds the error handling, and we also move the call to a slightly earlier place to make bailing out easier. Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/omap2/dss/dss.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/video/fbdev/omap2/dss/dss.c b/drivers/video/fbdev/omap2/dss/dss.c index 1ce47441efe3..28e6ff053b47 100644 --- a/drivers/video/fbdev/omap2/dss/dss.c +++ b/drivers/video/fbdev/omap2/dss/dss.c @@ -1125,6 +1125,10 @@ static int __init omap_dsshw_probe(struct platform_device *pdev) if (r) goto err_pll_init; + r = dss_init_ports(pdev); + if (r) + goto err_init_ports; + pm_runtime_enable(&pdev->dev); r = dss_runtime_get(); @@ -1149,8 +1153,6 @@ static int __init omap_dsshw_probe(struct platform_device *pdev) dss.lcd_clk_source[0] = OMAP_DSS_CLK_SRC_FCK; dss.lcd_clk_source[1] = OMAP_DSS_CLK_SRC_FCK; - dss_init_ports(pdev); - rev = dss_read_reg(DSS_REVISION); printk(KERN_INFO "OMAP DSS rev %d.%d\n", FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0)); @@ -1167,7 +1169,8 @@ static int __init omap_dsshw_probe(struct platform_device *pdev) err_runtime_get: pm_runtime_disable(&pdev->dev); - + dss_uninit_ports(pdev); +err_init_ports: if (dss.video1_pll) dss_video_pll_uninit(dss.video1_pll);