From patchwork Tue Feb 8 21:08:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Vetter X-Patchwork-Id: 12739403 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 5BB09C4167D for ; Tue, 8 Feb 2022 22:24:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1386587AbiBHWYB (ORCPT ); Tue, 8 Feb 2022 17:24:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1386732AbiBHVIx (ORCPT ); Tue, 8 Feb 2022 16:08:53 -0500 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 143A4C0612B8 for ; Tue, 8 Feb 2022 13:08:53 -0800 (PST) Received: by mail-wr1-x432.google.com with SMTP id f17so627580wrx.1 for ; Tue, 08 Feb 2022 13:08:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Ox4yXC0LP8o2wCPaioNRgnQjoBr7m6vhS+hT+ChhFWw=; b=S5BqVNPSpXHrqviuw3HJUVHCNuXrwfZETQgddkSqec9Q51qTu/X1Dy3DHTTT/LagCc TdfBUwokFJF0o/5jKLoZI4jM9BwZ4q0H1RYvw+h1/Ibn+wlkQIVyJ99QoReMwJFgFFyb hL6uv3nX42Ve284n0fZhP+uQl2c3CEhq0yFcA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Ox4yXC0LP8o2wCPaioNRgnQjoBr7m6vhS+hT+ChhFWw=; b=VtvitznklsOF+yQeXnpR5o3fcigJoeqsm71nEPRUvBxBGeER/1KG02UgaY/RqKjinw pcjdIK05JMOjMI3wTuV5a2FVJVA2wvIbob+SPqJkCalJ677YxuieXP/ZIRp1mdzwX4qc TGMcWNsVR8pcL32c/zimg/VmFkom/rgHND7YrqOHCrq3MiRVLDHgqyB/A50E6BAnOxtb t2N9oBC4oeL49pue9HR6msDeMBLHhq8+1XW93tX91Q/hmj4+aEEwVmGnEUCit5dpeVDW a8KbDA5jy89K9KcRjIcvMr8iHeeTtyTxdvxpBD+JHQNbmfbld+0dcwKaGgxn6SLGUUPf HilQ== X-Gm-Message-State: AOAM532q38Ocdw8wvsiuNvo7E2uNEpjp66z1s5RPLFaG925nmyBtq6D3 sESBl8EAnbw5v7plyKB+JpcXYw== X-Google-Smtp-Source: ABdhPJz+CmlVndGXlugGb0ahxfiZBUSbHrx3Tg5Zrm6dge27t3XQoa5XtM7kt+nVAKioCX2KEMo9QQ== X-Received: by 2002:a5d:4c41:: with SMTP id n1mr4989076wrt.128.1644354531674; Tue, 08 Feb 2022 13:08:51 -0800 (PST) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id o14sm3033561wmr.3.2022.02.08.13.08.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Feb 2022 13:08:50 -0800 (PST) From: Daniel Vetter To: DRI Development Cc: Intel Graphics Development , linux-fbdev@vger.kernel.org, LKML , Daniel Vetter , Sam Ravnborg , Daniel Vetter , Daniel Vetter , Du Cheng , Tetsuo Handa , Claudio Suarez , Thomas Zimmermann Subject: [PATCH v2 13/19] fbcon: Consistently protect deferred_takeover with console_lock() Date: Tue, 8 Feb 2022 22:08:18 +0100 Message-Id: <20220208210824.2238981-14-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220208210824.2238981-1-daniel.vetter@ffwll.ch> References: <20220208210824.2238981-1-daniel.vetter@ffwll.ch> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org This shouldn't be a problem in practice since until we've actually taken over the console there's nothing we've registered with the console/vt subsystem, so the exit/unbind path that check this can't do the wrong thing. But it's confusing, so fix it by moving it a tad later. Acked-by: Sam Ravnborg Signed-off-by: Daniel Vetter Cc: Daniel Vetter Cc: Du Cheng Cc: Tetsuo Handa Cc: Claudio Suarez Cc: Thomas Zimmermann --- drivers/video/fbdev/core/fbcon.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index cc960bf49991..4f9752ee9189 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -3227,6 +3227,9 @@ static void fbcon_register_existing_fbs(struct work_struct *work) console_lock(); + deferred_takeover = false; + logo_shown = FBCON_LOGO_DONTSHOW; + for_each_registered_fb(i) fbcon_fb_registered(registered_fb[i]); @@ -3244,8 +3247,6 @@ static int fbcon_output_notifier(struct notifier_block *nb, pr_info("fbcon: Taking over console\n"); dummycon_unregister_output_notifier(&fbcon_output_nb); - deferred_takeover = false; - logo_shown = FBCON_LOGO_DONTSHOW; /* We may get called in atomic context */ schedule_work(&fbcon_deferred_takeover_work);