From patchwork Fri Feb 18 10:03:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 12751223 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B77D0C433EF for ; Fri, 18 Feb 2022 10:05:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 705D110F01F; Fri, 18 Feb 2022 10:05:14 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id C81BA10EF43; Fri, 18 Feb 2022 10:05:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645178707; x=1676714707; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Gu8XmegNYGrY6ZfGHaEb+MBL+2RJnYd0SA3O6y25cfo=; b=MLmAN+LqQbCSmuuybNkGC4Q5tKZ+wrkyug9UTybiQ3r7HFUJqE89dnfR rwLh40vnQ69LR1fe91GFtBElSo3/DLYBDBWT9hYatb3cwj/E2mxR03PYV doX7DURPYdsopdBeXGCqCy20o0qZBOcBvlNrW41qN2jnqEjralyV8lgIf fLBp1MBl2iXCahgoWI+pp5fobPlLgzs02CmGzbD6gwpCRThHgPsXktXk+ I1eacqFTzuZ/uR2r+6Q7OOs02dwVSd2ppY9VnLTCrJmfvcchB7wl4g3Rb cC6xrIKdV7VA5ol5U/wUy0yvYgWv3LDDgvDk28yI+iseZx2hYsNqhx/Q6 w==; X-IronPort-AV: E=McAfee;i="6200,9189,10261"; a="337541433" X-IronPort-AV: E=Sophos;i="5.88,378,1635231600"; d="scan'208";a="337541433" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Feb 2022 02:05:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,378,1635231600"; d="scan'208";a="505338914" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.151]) by orsmga006.jf.intel.com with SMTP; 18 Feb 2022 02:05:03 -0800 Received: by stinkbox (sSMTP sendmail emulation); Fri, 18 Feb 2022 12:05:02 +0200 From: Ville Syrjala To: dri-devel@lists.freedesktop.org Subject: [PATCH 13/22] drm/mtk: Use drm_mode_init() for on-stack modes Date: Fri, 18 Feb 2022 12:03:54 +0200 Message-Id: <20220218100403.7028-14-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220218100403.7028-1-ville.syrjala@linux.intel.com> References: <20220218100403.7028-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chun-Kuang Hu , intel-gfx@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Ville Syrjälä Initialize on-stack modes with drm_mode_init() to guarantee no stack garbage in the list head. Based on the following cocci script, with manual fixups: @decl@ identifier M; expression E; @@ - struct drm_display_mode M = E; + struct drm_display_mode M; @@ identifier decl.M; expression decl.E; statement S, S1; @@ struct drm_display_mode M; ... when != S + drm_mode_init(&M, &E); + S1 @@ expression decl.E; @@ - &*E + E Cc: Chun-Kuang Hu Cc: Philipp Zabel Signed-off-by: Ville Syrjälä --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 3196189429bc..30f879e68a2b 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1218,7 +1218,7 @@ static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge, if (next_bridge) { struct drm_display_mode adjusted_mode; - drm_mode_copy(&adjusted_mode, mode); + drm_mode_init(&adjusted_mode, mode); if (!drm_bridge_chain_mode_fixup(next_bridge, mode, &adjusted_mode)) return MODE_BAD;