From patchwork Mon Oct 9 22:09:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 731274 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4201C2BA1B for ; Mon, 9 Oct 2023 22:09:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378871AbjJIWJR (ORCPT ); Mon, 9 Oct 2023 18:09:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378885AbjJIWJQ (ORCPT ); Mon, 9 Oct 2023 18:09:16 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E4044A6 for ; Mon, 9 Oct 2023 15:09:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696889353; x=1728425353; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=z2/kj9VPKDSWf50h0Ub2vphEwmDcBMduOifQK2YlvZk=; b=lo8CaHiU0z5IShqMLKk9l94DLCfJuF47jbs7WLjMw3qMpEQsxNxLFnqM GzP4zzIurPSExU2p4/UZwr1uKybVhKSGDM3aM/POSJUWonmrv8+HI90+X HyYz9HhM5qaH2y5LbtRlj9blF58JhqN80HE9MOL43XCBQyOTOYPhTN07n PGR89L54RfC0R0hN65MMZHg9qpIJoDi4LW07m4v+nJJ6i5xP9q3uqu/Wp sVdfDBSbU36ZUxyvJ+K6OrW2MdNCMsj4qWei/hTO5KvyozAlDuWde3b+X +vvXUko8smcoUghx+F9k5m2nnHNlAP4BdYaFzaldz7mkNsE6fLNbX0Siw w==; X-IronPort-AV: E=McAfee;i="6600,9927,10858"; a="388123391" X-IronPort-AV: E=Sophos;i="6.03,211,1694761200"; d="scan'208";a="388123391" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2023 15:09:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10858"; a="782647388" X-IronPort-AV: E=Sophos;i="6.03,211,1694761200"; d="scan'208";a="782647388" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2023 15:09:12 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id AC3E91209F6; Tue, 10 Oct 2023 01:09:09 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: Laurent Pinchart , tomi.valkeinen@ideasonboard.com Subject: [PATCH v2 4/4] media: ccs: Fix a (harmless) lockdep warning Date: Tue, 10 Oct 2023 01:09:06 +0300 Message-Id: <20231009220906.221303-5-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231009220906.221303-1-sakari.ailus@linux.intel.com> References: <20231009220906.221303-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The v4l2_subdev_init_finalize() is a macro that creates an unique lockdep key and name. As the CCS driver initialises all three of its sub-devices using the same call site, this creates a lockdep warning. Address it. Fixes: 4b05b1baae3e ("media: ccs: Use sub-device active state") Signed-off-by: Sakari Ailus --- drivers/media/i2c/ccs/ccs-core.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 6589b0d84e06..2b3b712d60b5 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -2955,7 +2955,9 @@ static void ccs_cleanup(struct ccs_sensor *sensor) static int ccs_init_subdev(struct ccs_sensor *sensor, struct ccs_subdev *ssd, const char *name, - unsigned short num_pads, u32 function) + unsigned short num_pads, u32 function, + const char *lock_name, + struct lock_class_key *lock_key) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); int rval; @@ -2993,7 +2995,7 @@ static int ccs_init_subdev(struct ccs_sensor *sensor, return rval; } - rval = v4l2_subdev_init_finalize(&ssd->sd); + rval = __v4l2_subdev_init_finalize(&ssd->sd, lock_name, lock_key); if (rval) { media_entity_cleanup(&ssd->sd.entity); return rval; @@ -3208,6 +3210,8 @@ static int ccs_firmware_name(struct i2c_client *client, static int ccs_probe(struct i2c_client *client) { + static struct lock_class_key pixel_array_lock_key, binner_lock_key, + scaler_lock_key; const struct ccs_device *ccsdev = device_get_match_data(&client->dev); struct ccs_sensor *sensor; const struct firmware *fw; @@ -3491,15 +3495,18 @@ static int ccs_probe(struct i2c_client *client) } rval = ccs_init_subdev(sensor, sensor->scaler, " scaler", 2, - MEDIA_ENT_F_PROC_VIDEO_SCALER); + MEDIA_ENT_F_PROC_VIDEO_SCALER, + "ccs scaler mutex", &scaler_lock_key); if (rval) goto out_cleanup; rval = ccs_init_subdev(sensor, sensor->binner, " binner", 2, - MEDIA_ENT_F_PROC_VIDEO_SCALER); + MEDIA_ENT_F_PROC_VIDEO_SCALER, + "ccs binner mutex", &binner_lock_key); if (rval) goto out_cleanup; rval = ccs_init_subdev(sensor, sensor->pixel_array, " pixel_array", 1, - MEDIA_ENT_F_CAM_SENSOR); + MEDIA_ENT_F_CAM_SENSOR, "ccs pixel array mutex", + &pixel_array_lock_key); if (rval) goto out_cleanup;