From patchwork Wed Jun 19 01:23:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 13703310 X-Patchwork-Delegate: kieran@bingham.xyz 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 B2AAD6AB6; Wed, 19 Jun 2024 01:24:25 +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=1718760267; cv=none; b=OHN4WQnB59Cd/rUnS29mxcyg6Xt5Iu3q22Lv5J60i/yrN4UY/TH16g0THyKZulcfLzxlMvQzxNd/Uh7/TcKLRZYwWx6hNXnUfYGplbtOJnJUaUu0muzvNTr76e36/bfXe7PYmyw0g3cRPwLUdM/cINNkSv1ekiRSItS0TyEQHzw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718760267; c=relaxed/simple; bh=JM3em1hFUj4zI1/nP0bY2hrcwLa2X9MF1PvvcpPLXcc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q4tAoBnli51jRe0rBqWK/RoROyyZr9EUdKfYbNs6d5ml04OyuePs3z0JFc3II6jerNxxV0cbYZZUlb6kgmrDIJPiPmP1BpHJqEjFlIvSr7NMfemKfs3xNuFrXxhuOjFAqc6e3OF5m5+qUMFZkE8sbU2ITEZQFwGarkcwZjbXLvU= 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=g7btRBOP; 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="g7btRBOP" Received: from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi [81.175.209.231]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 28FFA11CF; Wed, 19 Jun 2024 03:24:05 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1718760245; bh=JM3em1hFUj4zI1/nP0bY2hrcwLa2X9MF1PvvcpPLXcc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g7btRBOP7Qo7KDi5kNpeXqCceRk2C0MaN5onY5kWVkWf2P3I4Bi7wt46XPIkpLJgY O4Blty4LGdogdUMc8Co1Lh1/8YbrC5cqBQakvkr9JmKLcLMdD57i6L08cgIZeKgBo0 P11I7xMEK75zMBC0vB9sgD4XQjxWyQHjRAGBf22M= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, Eugen Hristev , Maxime Ripard , Chen-Yu Tsai , Sakari Ailus , Kieran Bingham , Tomi Valkeinen , Jacopo Mondi , Hans Verkuil Subject: [PATCH 3/8] media: sun4i_csi: Don't use v4l2_subdev_link_validate() for video device Date: Wed, 19 Jun 2024 04:23:51 +0300 Message-ID: <20240619012356.22685-4-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.44.2 In-Reply-To: <20240619012356.22685-1-laurent.pinchart+renesas@ideasonboard.com> References: <20240619012356.22685-1-laurent.pinchart+renesas@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 = {