From nobody Sat Oct 18 02:17:41 2025 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 98CADC43219 for ; Wed, 19 Oct 2022 09:02:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229936AbiJSJCq (ORCPT ); Wed, 19 Oct 2022 05:02:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232444AbiJSI7w (ORCPT ); Wed, 19 Oct 2022 04:59:52 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 168D76AEA9; Wed, 19 Oct 2022 01:55:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D03FD617F0; Wed, 19 Oct 2022 08:53:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1B72C433D6; Wed, 19 Oct 2022 08:53:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666169627; bh=OowrNALwkvS4Tcm3QNdrx2jP/lE+fwctiM0D4EOC+ts=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RKfn/eXHp9Maka1nkEiw+NQunJlYkT3q9Cw8E8Cg9T69oZLMKCTEIw1PPDlWryZvA aYohxiHZwpYpwnQSVkq4+uifVayzBPrAF2prDYRJUt7HVoUIHJBrC6T337jqxPvwUg RGfwDxcmmOJXpBo024DYK/BImJgBDrirdG6SwivU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Maxime Ripard , Sasha Levin Subject: [PATCH 6.0 348/862] drm/bridge: Avoid uninitialized variable warning Date: Wed, 19 Oct 2022 10:27:15 +0200 Message-Id: <20221019083305.417150627@linuxfoundation.org> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221019083249.951566199@linuxfoundation.org> References: <20221019083249.951566199@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Dan Carpenter [ Upstream commit 7d1202738efda60155d98b370b3c70d336be0eea ] This code works, but technically it uses "num_in_bus_fmts" before it has been initialized so it leads to static checker warnings and probably KMEMsan warnings at run time. Initialize the variable to zero to silence the warning. Fixes: f32df58acc68 ("drm/bridge: Add the necessary bits to support bus for= mat negotiation") Signed-off-by: Dan Carpenter Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/YrrIs3hoGcPVmXc5@kili Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_bridge.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 6abf7a2407e9..1545c50fd1c8 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -847,8 +847,8 @@ static int select_bus_fmt_recursive(struct drm_bridge *= first_bridge, struct drm_connector_state *conn_state, u32 out_bus_fmt) { + unsigned int i, num_in_bus_fmts =3D 0; struct drm_bridge_state *cur_state; - unsigned int num_in_bus_fmts, i; struct drm_bridge *prev_bridge; u32 *in_bus_fmts; int ret; @@ -969,7 +969,7 @@ drm_atomic_bridge_chain_select_bus_fmts(struct drm_brid= ge *bridge, struct drm_connector *conn =3D conn_state->connector; struct drm_encoder *encoder =3D bridge->encoder; struct drm_bridge_state *last_bridge_state; - unsigned int i, num_out_bus_fmts; + unsigned int i, num_out_bus_fmts =3D 0; struct drm_bridge *last_bridge; u32 *out_bus_fmts; int ret =3D 0; --=20 2.35.1