From patchwork Mon May 16 19:36:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 573812 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 43852C433EF for ; Mon, 16 May 2022 19:53:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346407AbiEPTxq (ORCPT ); Mon, 16 May 2022 15:53:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347049AbiEPTvg (ORCPT ); Mon, 16 May 2022 15:51:36 -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 1D6EF2F3; Mon, 16 May 2022 12:46:53 -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 ACF6660A1C; Mon, 16 May 2022 19:46:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B414AC385AA; Mon, 16 May 2022 19:46:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652730412; bh=ZY7r6g2FfkeLnQCs4ZNZ/uMW7ITBX/uqL8DkAAxNV/c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dV8cbEWylOI8KUphbznskEaEtq2/j/9Mgnx3DupxdytXHBIkgzheATatPB8tadN8N UA7xhQpjdjvDSh8nFG4nIODcihNT5DbryGvREKzsaEDWC/huyjRfMxURgLWh6qgd2K JCGftmJyuJLE9V0fteDNAvqGIVY2+sQ9nAimylY8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zack Rusin , Daniel Vetter , Martin Krastev , Maaz Mombasawala Subject: [PATCH 5.10 57/66] drm/vmwgfx: Initialize drm_mode_fb_cmd2 Date: Mon, 16 May 2022 21:36:57 +0200 Message-Id: <20220516193621.059771631@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193619.400083785@linuxfoundation.org> References: <20220516193619.400083785@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Zack Rusin commit 3059d9b9f6aa433a55b9d0d21b566396d5497c33 upstream. Transition to drm_mode_fb_cmd2 from drm_mode_fb_cmd left the structure unitialized. drm_mode_fb_cmd2 adds a few additional members, e.g. flags and modifiers which were never initialized. Garbage in those members can cause random failures during the bringup of the fbcon. Initializing the structure fixes random blank screens after bootup due to flags/modifiers mismatches during the fbcon bring up. Fixes: dabdcdc9822a ("drm/vmwgfx: Switch to mode_cmd2") Signed-off-by: Zack Rusin Cc: Daniel Vetter Cc: # v4.10+ Reviewed-by: Martin Krastev Reviewed-by: Maaz Mombasawala Link: https://patchwork.freedesktop.org/patch/msgid/20220302152426.885214-7-zack@kde.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c @@ -498,7 +498,7 @@ static int vmw_fb_kms_detach(struct vmw_ static int vmw_fb_kms_framebuffer(struct fb_info *info) { - struct drm_mode_fb_cmd2 mode_cmd; + struct drm_mode_fb_cmd2 mode_cmd = {0}; struct vmw_fb_par *par = info->par; struct fb_var_screeninfo *var = &info->var; struct drm_framebuffer *cur_fb;