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 X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 67653C433DF for ; Mon, 22 Jun 2020 20:08:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B5F920767 for ; Mon, 22 Jun 2020 20:08:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VSMd8vBl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728967AbgFVUID (ORCPT ); Mon, 22 Jun 2020 16:08:03 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:45459 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728307AbgFVUID (ORCPT ); Mon, 22 Jun 2020 16:08:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1592856482; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lSAb/eseSEs/+a9Bniw5lJiSCdPpLF6HO9i3q2ob+7o=; b=VSMd8vBlhchYnlBQMSRcY32KLu5ADBJqf3fS66anXUP8QF0l72K+Z1GqUmssPbpp1JQnA3 e/4aZvzy98dY84A5fGJL154hO6GDM+qpTbCNFdaPxelb8BYOpkRCMbzH4tr4BjE25uiWPq NDWWk6KC96oG3MMTT58OxLfD/94sh7U= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-227-n7C1-OBbOuaTO5iqvTMmYg-1; Mon, 22 Jun 2020 16:07:58 -0400 X-MC-Unique: n7C1-OBbOuaTO5iqvTMmYg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AED5A18A8221; Mon, 22 Jun 2020 20:07:56 +0000 (UTC) Received: from Whitewolf.redhat.com (ovpn-117-166.rdu2.redhat.com [10.10.117.166]) by smtp.corp.redhat.com (Postfix) with ESMTP id 046A95C1BD; Mon, 22 Jun 2020 20:07:54 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Cc: Daniel Vetter , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , linux-kernel@vger.kernel.org (open list) Subject: [RFC v5 01/10] drm/vblank: Register drmm cleanup action once per drm_vblank_crtc Date: Mon, 22 Jun 2020 16:07:21 -0400 Message-Id: <20200622200730.120716-2-lyude@redhat.com> In-Reply-To: <20200622200730.120716-1-lyude@redhat.com> References: <20200622200730.120716-1-lyude@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since we'll be allocating resources for kthread_create_worker() in the next commit (which could fail and require us to clean up the mess), let's simplify the cleanup process a bit by registering a drm_vblank_init_release() action for each drm_vblank_crtc so they're still cleaned up if we fail to initialize one of them. Changes since v3: * Use drmm_add_action_or_reset() - Daniel Vetter Cc: Daniel Vetter Cc: Ville Syrjälä Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Signed-off-by: Lyude Paul --- drivers/gpu/drm/drm_vblank.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c index 85e5f2db16085..ce5c1e1d29963 100644 --- a/drivers/gpu/drm/drm_vblank.c +++ b/drivers/gpu/drm/drm_vblank.c @@ -492,16 +492,12 @@ static void vblank_disable_fn(struct timer_list *t) static void drm_vblank_init_release(struct drm_device *dev, void *ptr) { - unsigned int pipe; - - for (pipe = 0; pipe < dev->num_crtcs; pipe++) { - struct drm_vblank_crtc *vblank = &dev->vblank[pipe]; + struct drm_vblank_crtc *vblank = ptr; - drm_WARN_ON(dev, READ_ONCE(vblank->enabled) && - drm_core_check_feature(dev, DRIVER_MODESET)); + drm_WARN_ON(dev, READ_ONCE(vblank->enabled) && + drm_core_check_feature(dev, DRIVER_MODESET)); - del_timer_sync(&vblank->disable_timer); - } + del_timer_sync(&vblank->disable_timer); } /** @@ -511,7 +507,7 @@ static void drm_vblank_init_release(struct drm_device *dev, void *ptr) * * This function initializes vblank support for @num_crtcs display pipelines. * Cleanup is handled automatically through a cleanup function added with - * drmm_add_action(). + * drmm_add_action_or_reset(). * * Returns: * Zero on success or a negative error code on failure. @@ -530,10 +526,6 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs) dev->num_crtcs = num_crtcs; - ret = drmm_add_action(dev, drm_vblank_init_release, NULL); - if (ret) - return ret; - for (i = 0; i < num_crtcs; i++) { struct drm_vblank_crtc *vblank = &dev->vblank[i]; @@ -542,6 +534,11 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs) init_waitqueue_head(&vblank->queue); timer_setup(&vblank->disable_timer, vblank_disable_fn, 0); seqlock_init(&vblank->seqlock); + + ret = drmm_add_action_or_reset(dev, drm_vblank_init_release, + vblank); + if (ret) + return ret; } return 0; -- 2.26.2