From patchwork Thu Aug 22 15:45:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 821548 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 C171B1CCB4E; Thu, 22 Aug 2024 15:45:39 +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=1724341541; cv=none; b=VXyMhWwUSD23KV2AssC3s32Ix7AFxhdWeuSKIakmewIv5ORK2puM/YrHoMwpXOmwk+SrhFSaY0xCCu8kKss4y/hucgS3gieyRnNYE5GNCnalCLSAQtyBlP4UcozKpYRrWTNVKWPdsHfQ2yQSo/IZJliSNA7LYsCpzY56RnAgqMo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724341541; c=relaxed/simple; bh=vWnDrPPWzy4Zl3mZqqk63elPGbjLXf+2JHhw+izsKsI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bEfcqauEEHpYrOPh3QzBeMsVLNspx8PIR2Wiu6rqCwmmpyK6kv/JyBvJNKExxNwb6Y+e/tpOMpjAheOQfvGF/wd6RPy175I8d5dtMu5+FJjh3S78y4/FCjYUL7IU6CI7iTzCK0YAa3ZtfNCqdkT6wkudj9K51IQ1GRgUVCq/Rtk= 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=OKncaDKc; 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="OKncaDKc" Received: from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi [81.175.209.231]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A59A78D0; Thu, 22 Aug 2024 17:44:34 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1724341474; bh=vWnDrPPWzy4Zl3mZqqk63elPGbjLXf+2JHhw+izsKsI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OKncaDKcUlpJpqoNwhdP5cRHV7PrVeIr6gmVBPO5akCRO30gdiUJVDyoJmTXHcTut 6Yl6v1OVSPWrU8jsc/YjGcdIIpdrHUWCvZtddT8tq+DViI6zRUiSrinHCrQhaojq7N 99JpPhUWBAJbFNdNj/h6pDWETWpSaBUwllNiHVhY= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Chen-Yu Tsai , Eugen Hristev , Hans Verkuil , Jacopo Mondi , Kieran Bingham , Maxime Ripard , Sakari Ailus , Tomi Valkeinen , linux-renesas-soc@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: [PATCH v2 3/7] media: sun4i_csi: Don't use v4l2_subdev_link_validate() for video device Date: Thu, 22 Aug 2024 18:45:27 +0300 Message-ID: <20240822154531.25912-4-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.44.2 In-Reply-To: <20240822154531.25912-1-laurent.pinchart+renesas@ideasonboard.com> References: <20240822154531.25912-1-laurent.pinchart+renesas@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@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 = {