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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 9596FC33C9E for ; Wed, 15 Jan 2020 01:28:04 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 728E824658 for ; Wed, 15 Jan 2020 01:28:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 728E824658 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ravnborg.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D82CA6E808; Wed, 15 Jan 2020 01:28:03 +0000 (UTC) Received: from asavdk4.altibox.net (asavdk4.altibox.net [109.247.116.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 567D26E808 for ; Wed, 15 Jan 2020 01:28:02 +0000 (UTC) Received: from ravnborg.org (unknown [158.248.194.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by asavdk4.altibox.net (Postfix) with ESMTPS id B85C580487; Wed, 15 Jan 2020 02:27:57 +0100 (CET) Date: Wed, 15 Jan 2020 02:27:56 +0100 From: Sam Ravnborg To: Rodrigo Siqueira Subject: Re: [PATCH 09/10] drm/vkms: plane_state->fb iff plane_state->crtc Message-ID: <20200115012756.GA4129@ravnborg.org> References: <20191213172612.1514842-1-daniel.vetter@ffwll.ch> <20191213172612.1514842-9-daniel.vetter@ffwll.ch> <20200114235013.o6y2hgu6mzfpf6dx@smtp.gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200114235013.o6y2hgu6mzfpf6dx@smtp.gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=VcLZwmh9 c=1 sm=1 tr=0 a=UWs3HLbX/2nnQ3s7vZ42gw==:117 a=UWs3HLbX/2nnQ3s7vZ42gw==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=kj9zAlcOel0A:10 a=QyXUC8HyAAAA:8 a=pGLkceISAAAA:8 a=e5mUnYsNAAAA:8 a=tgIJ6WjhPxUqa3LDiFcA:9 a=CjuIK1q_8ugA:10 a=ViBQuv4y83sA:10 a=Vxmtnl_E_bksehYqCbjh:22 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: Daniel Vetter , Haneen Mohammed , DRI Development , Daniel Vetter Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi Rodrigo. On Tue, Jan 14, 2020 at 06:50:13PM -0500, Rodrigo Siqueira wrote: > On 12/13, Daniel Vetter wrote: > > Checking both is one too much, so wrap a WARN_ON around it to stope > > the copypasta. > > > > Signed-off-by: Daniel Vetter > > Cc: Rodrigo Siqueira > > Cc: Haneen Mohammed > > Cc: Daniel Vetter > > --- > > drivers/gpu/drm/vkms/vkms_plane.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c > > index 5fc8f85aaf3d..6d31265a2ab7 100644 > > --- a/drivers/gpu/drm/vkms/vkms_plane.c > > +++ b/drivers/gpu/drm/vkms/vkms_plane.c > > @@ -117,7 +117,7 @@ static int vkms_plane_atomic_check(struct drm_plane *plane, > > bool can_position = false; > > int ret; > > > > - if (!state->fb | !state->crtc) > > + if (!state->fb || WARN_ON(!state->crtc)) > > return 0; > > > > crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); > > -- > > 2.24.0 > > > > Hi, > > Sorry, the delay in taking a look at this patch. > > I tried to find the whole series for getting the context related to this > patch, but I could not find it in my mailbox. Could you shed some light > here? Why check fb and crtc is too much? How the WARN_ON fix the issue? You can find some background in the first patch: https://lists.freedesktop.org/archives/dri-devel/2019-December/248981.html Hope this sched enough light on the topic. Sam _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel