From patchwork Mon Jan 31 21:05:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Vetter X-Patchwork-Id: 12731161 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 8E6D3C433FE for ; Mon, 31 Jan 2022 21:07:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379754AbiAaVH1 (ORCPT ); Mon, 31 Jan 2022 16:07:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379942AbiAaVGv (ORCPT ); Mon, 31 Jan 2022 16:06:51 -0500 Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37F96C061765 for ; Mon, 31 Jan 2022 13:06:48 -0800 (PST) Received: by mail-wr1-x42f.google.com with SMTP id s18so27876679wrv.7 for ; Mon, 31 Jan 2022 13:06:48 -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=NgnSdd2AvfoeNcByN2bDHp+PhpIRGYatmO8U9PanFuc=; b=S+8VBUNNneiGc1+bGPSnrLBcbuVFkgKSU1F9WHEKGEhoPtQNo9kYEWH32/VdEJ10IN +9JFlSujzOM4Bw11VzRyD+o6Ay/zYtaJDCVsEreNhW23/UsII4y11JSGXkMSZ5oO87vf awGxIE+pHd6B7RDP848NhmOIATd3HdslcGwVw= 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=NgnSdd2AvfoeNcByN2bDHp+PhpIRGYatmO8U9PanFuc=; b=L/k4oQbrf9WgpFxe6ME74tH6LMc/xJowMVbpZIVEmmLhWRGBj1w3EI2WZ/6qqemQQF 1sjwUPLRifyXd/3Utd7vOe/ouT7b8Oa9C7agevKsj2IJr/BrFEjaay20xx5s/ZOJBPRY ZqaoqwX8InVmgeRh4qAUkozIvoLsuXV6r2C5DT+hK3YubxEmwXekicVkTQEQI5SLOxs2 ie/ehaIqjUm6kfXXAxS01VXKS6j096uuh/nB8gB94k+DEuRe6WUQrYGYcgxkt9Pf2I6R 56HLPsIO/xZgBKcC79zk2jF1R2Ebj9uDmTyJlJ1I7oHs45Id2a9ygYP448bsum9UVJKr mGgw== X-Gm-Message-State: AOAM5337r50sXOBnhbyLRfZYbH4UCCEbOTy6x8hQh+w6XlRAUHhQjtKL 7J7uXQpAuH4qULrJqvwVlbjKLg== X-Google-Smtp-Source: ABdhPJzMRGhgP+Wd468RY30pZW2pKS4gWFtsBggDBPv5aBnxBsUkCxh6leO3bSHMlVVRxYvL1JzDCg== X-Received: by 2002:a5d:4b4d:: with SMTP id w13mr19360147wrs.640.1643663206862; Mon, 31 Jan 2022 13:06:46 -0800 (PST) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id b11sm314961wmq.46.2022.01.31.13.06.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Jan 2022 13:06:46 -0800 (PST) From: Daniel Vetter To: DRI Development Cc: Intel Graphics Development , linux-fbdev@vger.kernel.org, LKML , Daniel Vetter , Daniel Vetter , Daniel Vetter , Greg Kroah-Hartman , Tetsuo Handa , Thomas Zimmermann , Claudio Suarez , Du Cheng Subject: [PATCH 13/21] fbcon: move more common code into fb_open() Date: Mon, 31 Jan 2022 22:05:44 +0100 Message-Id: <20220131210552.482606-14-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20220131210552.482606-1-daniel.vetter@ffwll.ch> References: <20220131210552.482606-1-daniel.vetter@ffwll.ch> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org No idea why con2fb_acquire_newinfo() initializes much less than fbcon_startup(), but so be it. From a quick look most of the un-initialized stuff should be fairly harmless, but who knows. Signed-off-by: Daniel Vetter Cc: Daniel Vetter Cc: Greg Kroah-Hartman Cc: Tetsuo Handa Cc: Thomas Zimmermann Cc: Claudio Suarez Cc: Du Cheng Reported-by: kernel test robot Acked-by: Sam Ravnborg --- drivers/video/fbdev/core/fbcon.c | 74 +++++++++++++------------------- 1 file changed, 31 insertions(+), 43 deletions(-) diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index b83a5a77d8a8..5a3391ff038d 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -680,8 +680,18 @@ static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount) #endif /* CONFIG_MISC_TILEBLITTING */ +static void fbcon_release(struct fb_info *info) +{ + if (info->fbops->fb_release) + info->fbops->fb_release(info, 0); + + module_put(info->fbops->owner); +} + static int fbcon_open(struct fb_info *info) { + struct fbcon_ops *ops; + if (!try_module_get(info->fbops->owner)) return -ENODEV; @@ -691,19 +701,22 @@ static int fbcon_open(struct fb_info *info) return -ENODEV; } - return 0; -} + ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); + if (!ops) { + fbcon_release(info); + return -ENOMEM; + } -static void fbcon_release(struct fb_info *info) -{ - if (info->fbops->fb_release) - info->fbops->fb_release(info, 0); + INIT_DELAYED_WORK(&ops->cursor_work, fb_flashcursor); + ops->info = info; + info->fbcon_par = ops; + ops->cur_blink_jiffies = HZ / 5; - module_put(info->fbops->owner); + return 0; } static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, - int unit, int oldidx) + int unit) { struct fbcon_ops *ops = NULL; int err; @@ -712,27 +725,10 @@ static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info, if (err) return err; - if (!err) { - ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); - if (!ops) - err = -ENOMEM; - - INIT_DELAYED_WORK(&ops->cursor_work, fb_flashcursor); - } - - if (!err) { - ops->cur_blink_jiffies = HZ / 5; - ops->info = info; - info->fbcon_par = ops; - - if (vc) - set_blitting_type(vc, info); - } + ops = info->fbcon_par; - if (err) { - con2fb_map[unit] = oldidx; - fbcon_release(info); - } + if (vc) + set_blitting_type(vc, info); return err; } @@ -840,9 +836,11 @@ static int set_con2fb_map(int unit, int newidx, int user) found = search_fb_in_map(newidx); - con2fb_map[unit] = newidx; - if (!err && !found) - err = con2fb_acquire_newinfo(vc, info, unit, oldidx); + if (!err && !found) { + err = con2fb_acquire_newinfo(vc, info, unit); + if (!err) + con2fb_map[unit] = newidx; + } /* * If old fb is not mapped to any of the consoles, @@ -939,20 +937,10 @@ static const char *fbcon_startup(void) if (fbcon_open(info)) return NULL; - ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL); - if (!ops) { - fbcon_release(info); - return NULL; - } - - INIT_DELAYED_WORK(&ops->cursor_work, fb_flashcursor); - + ops = info->fbcon_par; ops->currcon = -1; ops->graphics = 1; ops->cur_rotate = -1; - ops->cur_blink_jiffies = HZ / 5; - ops->info = info; - info->fbcon_par = ops; p->con_rotate = initial_rotation; if (p->con_rotate == -1) @@ -1022,7 +1010,7 @@ static void fbcon_init(struct vc_data *vc, int init) return; if (!info->fbcon_par) - con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); + con2fb_acquire_newinfo(vc, info, vc->vc_num); /* If we are not the first console on this fb, copy the font from that console */