From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DBB9F155315 for ; Mon, 26 Aug 2024 11:04:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724670291; cv=none; b=dmZXWJ2P8/AQHxIuxsDMR3U/j+8m2okKH0qDDQfjvfbXa+WHsRXBs0ydUvd8/JpVT9oQVVekqiAJk6aI4mPnypuFsbQqx2vgxr/mP1rf3Cqmdil3zZfJ2948XVyoKtEwY/KMDWLBy62Qgli9aktCoLk9qLoiJueJ48901lGpurM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724670291; c=relaxed/simple; bh=2WvVXAlgR6hFVxDqgFaJMyO5Bzv/CRoY35e4IWOH72I=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=gzPm48myiWk89VMUWJ+j/OtigPkTyoeNHBsF6jsgxTsx6v264Kyw36e+wJvfBnz2tioVrkUVPvglFI3Bgnrhp3adtd56ehaNu+rZef5tyViBN79xRybYNJrXIAWINIHFPavxLI+54fNvk1RJsXUkrl28G/xcjew4me+WYcrto+0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=CtJ5UVN9; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="CtJ5UVN9" Received: from [192.168.88.20] (91-156-87-48.elisa-laajakaista.fi [91.156.87.48]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 5EC6C741; Mon, 26 Aug 2024 13:03:41 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1724670221; bh=2WvVXAlgR6hFVxDqgFaJMyO5Bzv/CRoY35e4IWOH72I=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=CtJ5UVN9XU6uwULDRVfa6thAQu9/nHgh+fHFs0+TC6KcRthCQ3C7t9HN3Jo/tQ2SE DAgTNtCgz39vqWrcYFdoV2aJEHBCL7Y0IFuhAB+PUnb2ICPyLV2wKukgJ+oZId5vk1 vzPFomzWFtJaAiGOMh8la5wIEPLneqXTRhZ2Uixc= Message-ID: <2d9c3516-442f-4e41-8620-cc0eaf9b1f03@ideasonboard.com> Date: Mon, 26 Aug 2024 14:04:44 +0300 Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/7] media: sun4i_csi: Don't use v4l2_subdev_link_validate() for video device To: Laurent Pinchart , linux-media@vger.kernel.org Cc: Chen-Yu Tsai , Eugen Hristev , Hans Verkuil , Jacopo Mondi , Kieran Bingham , Maxime Ripard , Sakari Ailus , linux-renesas-soc@vger.kernel.org, linux-sunxi@lists.linux.dev References: <20240822154531.25912-1-laurent.pinchart+renesas@ideasonboard.com> <20240822154531.25912-4-laurent.pinchart+renesas@ideasonboard.com> Content-Language: en-US From: Tomi Valkeinen Autocrypt: addr=tomi.valkeinen@ideasonboard.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi, On 22/08/2024 18:45, Laurent Pinchart wrote: > The v4l2_subdev_link_validate() function is a helper designed to > validate links whose sink is a subdev. When called on a link whose sink > is a video device, it only prints a warning and returns. Its usage in > the sun4i_csi driver is wrong, leaving the link from the sub4i_csi > subdev to the capture video device unvalidated. > > Planned improvements to the v4l2_subdev_link_validate() function will > turn the warning into an error, breaking the sun4i_csi driver. As an > interim measure, move the warning to the sun4i_csi driver in a custom > validation handler, and drop the call to the helper. > > Signed-off-by: Laurent Pinchart > Acked-by: Chen-Yu Tsai > --- > drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c > index dbb26c7b2f8d..d07e980aba61 100644 > --- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c > +++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c > @@ -35,8 +35,15 @@ struct sun4i_csi_traits { > bool has_isp; > }; > > +static int sun4i_csi_video_link_validate(struct media_link *link) > +{ > + dev_warn_once(link->graph_obj.mdev->dev, > + "Driver bug: link validation not implemented\n"); > + return 0; > +} > + > static const struct media_entity_operations sun4i_csi_video_entity_ops = { > - .link_validate = v4l2_subdev_link_validate, > + .link_validate = sun4i_csi_video_link_validate, > }; > > static const struct media_entity_operations sun4i_csi_subdev_entity_ops = { I fear this might just leave it broken, but I don't have a better idea. Reviewed-by: Tomi Valkeinen Tomi