From patchwork Thu Nov 16 12:24:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13457845 X-Patchwork-Delegate: kieran@bingham.xyz Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 633C3C197A0 for ; Thu, 16 Nov 2023 12:24:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345200AbjKPMYg (ORCPT ); Thu, 16 Nov 2023 07:24:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345194AbjKPMYf (ORCPT ); Thu, 16 Nov 2023 07:24:35 -0500 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1AB409C for ; Thu, 16 Nov 2023 04:24:31 -0800 (PST) X-IronPort-AV: E=Sophos;i="6.04,308,1695654000"; d="scan'208";a="183167221" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 16 Nov 2023 21:24:31 +0900 Received: from localhost.localdomain (unknown [10.226.93.178]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 273F54009F88; Thu, 16 Nov 2023 21:24:27 +0900 (JST) From: Biju Das To: David Airlie , Daniel Vetter Cc: Biju Das , Laurent Pinchart , Kieran Bingham , Jacopo Mondi , dri-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven , Prabhakar Mahadev Lad , Biju Das Subject: [PATCH v2] drm: rcar-du: Fix memory leak in rcar_du_vsps_init() Date: Thu, 16 Nov 2023 12:24:24 +0000 Message-Id: <20231116122424.80136-1-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org The rcar_du_vsps_init() doesn't free the np allocated by of_parse_phandle_with_fixed_args() for the non-error case. Fix memory leak for the non-error case. While at it, replace the label 'error'->'done' as it applies to non-error case as well and update the error check condition for rcar_du_vsp_init() to avoid breakage in future, if it returns positive value. Fixes: 3e81374e2014 ("drm: rcar-du: Support multiple sources from the same VSP") Signed-off-by: Biju Das Reviewed-by: Laurent Pinchart --- v1->v2: * Replaced the label 'error'->'done' as it applies to non-error case as well. * Update the error check condition for rcar_du_vsp_init() to avoid breakage in future, if it returns positive value. --- drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c index 70d8ad065bfa..4c8fe83dd610 100644 --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c @@ -705,7 +705,7 @@ static int rcar_du_vsps_init(struct rcar_du_device *rcdu) ret = of_parse_phandle_with_fixed_args(np, vsps_prop_name, cells, i, &args); if (ret < 0) - goto error; + goto done; /* * Add the VSP to the list or update the corresponding existing @@ -743,13 +743,11 @@ static int rcar_du_vsps_init(struct rcar_du_device *rcdu) vsp->dev = rcdu; ret = rcar_du_vsp_init(vsp, vsps[i].np, vsps[i].crtcs_mask); - if (ret < 0) - goto error; + if (ret) + goto done; } - return 0; - -error: +done: for (i = 0; i < ARRAY_SIZE(vsps); ++i) of_node_put(vsps[i].np);