From mboxrd@z Thu Jan 1 00:00:00 1970 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 1EDD4C76195 for ; Mon, 20 Mar 2023 15:08:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B137710E586; Mon, 20 Mar 2023 15:08:21 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 75AD510E1C0 for ; Mon, 20 Mar 2023 15:07:56 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 094E221AD2; Mon, 20 Mar 2023 15:07:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1679324875; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pCNvG15Q952Ad44DsKZLXnoyoh4oOpFvzAPicGCV6u0=; b=ivfOL9K1vs6U2z9fT05EHYDNFKn+n9mU/Hey/FqTEFCmTYnHm/F4KVkb4D7pOGYlLyYr/Y PJk+3jEwbofX6lVzH1JoCyJCyzLuJASg4Lb2l/cGqwQfefF7N+jDkL3VaabDwMpACHaAtP PDBiaNQDAraH8x1OAexn/7g2pSFiEjg= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1679324875; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pCNvG15Q952Ad44DsKZLXnoyoh4oOpFvzAPicGCV6u0=; b=naJRwvqJgwOg6PhSNWR6ic6ak1BWq8rtsEmKTEnNNrcCaTAjEuQnxqYtd46mF3i9ySNzEf gaqN9rIGdfZcarAQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C4B3C13A00; Mon, 20 Mar 2023 15:07:54 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id AAkdL8p2GGTXOgAAMHmgww (envelope-from ); Mon, 20 Mar 2023 15:07:54 +0000 From: Thomas Zimmermann To: javierm@redhat.com, daniel@ffwll.ch, airlied@gmail.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com, zackr@vmware.com, kraxel@redhat.com, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linux-graphics-maintainer@vmware.com Subject: [PATCH v2 6/8] drm/fbdev-generic: Clean up after failed probing Date: Mon, 20 Mar 2023 16:07:49 +0100 Message-Id: <20230320150751.20399-7-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230320150751.20399-1-tzimmermann@suse.de> References: <20230320150751.20399-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Thomas Zimmermann Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Clean up fbdev and client state if the probe function fails. It used to leak allocated resources. Also reorder the individual steps to simplify cleanup. v2: * move screen_size update into separate patches Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Acked-by: Zack Rusin --- drivers/gpu/drm/drm_fbdev_generic.c | 40 ++++++++++++++++++++--------- 1 file changed, 28 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/drm_fbdev_generic.c b/drivers/gpu/drm/drm_fbdev_generic.c index 73834a3cc6b0..e7eeba0c44b4 100644 --- a/drivers/gpu/drm/drm_fbdev_generic.c +++ b/drivers/gpu/drm/drm_fbdev_generic.c @@ -77,6 +77,7 @@ static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper, struct drm_client_buffer *buffer; struct fb_info *info; size_t screen_size; + void *screen_buffer; u32 format; int ret; @@ -92,36 +93,51 @@ static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper, fb_helper->buffer = buffer; fb_helper->fb = buffer->fb; + screen_size = buffer->gem->size; + screen_buffer = vzalloc(screen_size); + if (!screen_buffer) { + ret = -ENOMEM; + goto err_drm_client_framebuffer_delete; + } info = drm_fb_helper_alloc_info(fb_helper); - if (IS_ERR(info)) - return PTR_ERR(info); + if (IS_ERR(info)) { + ret = PTR_ERR(info); + goto err_vfree; + } + + drm_fb_helper_fill_info(info, fb_helper, sizes); info->fbops = &drm_fbdev_fb_ops; - info->screen_size = screen_size; - info->fix.smem_len = screen_size; info->flags = FBINFO_DEFAULT; - drm_fb_helper_fill_info(info, fb_helper, sizes); - - info->screen_buffer = vzalloc(screen_size); - if (!info->screen_buffer) - return -ENOMEM; + /* screen */ info->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST; - + info->screen_buffer = screen_buffer; info->fix.smem_start = page_to_phys(vmalloc_to_page(info->screen_buffer)); + info->fix.smem_len = screen_size; - /* Set a default deferred I/O handler */ + /* deferred I/O */ fb_helper->fbdefio.delay = HZ / 20; fb_helper->fbdefio.deferred_io = drm_fb_helper_deferred_io; info->fbdefio = &fb_helper->fbdefio; ret = fb_deferred_io_init(info); if (ret) - return ret; + goto err_drm_fb_helper_release_info; return 0; + +err_drm_fb_helper_release_info: + drm_fb_helper_release_info(fb_helper); +err_vfree: + vfree(screen_buffer); +err_drm_client_framebuffer_delete: + fb_helper->fb = NULL; + fb_helper->buffer = NULL; + drm_client_framebuffer_delete(buffer); + return ret; } static void drm_fbdev_damage_blit_real(struct drm_fb_helper *fb_helper, -- 2.40.0