From patchwork Fri Mar 24 07:08:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 667137 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 A9546C76195 for ; Fri, 24 Mar 2023 07:08:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229522AbjCXHI0 (ORCPT ); Fri, 24 Mar 2023 03:08:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231196AbjCXHIV (ORCPT ); Fri, 24 Mar 2023 03:08:21 -0400 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E33FD10ABA; Fri, 24 Mar 2023 00:08:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679641700; x=1711177700; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=wFx21pLLRhlzjgfRpaT39oVLARW7iuGOv5zrbZTnlkk=; b=abu2PdgA1eA702P8ApPn2n/+vMIRXDH5u+K5esz1fQAaD/SyvTv8hW03 gj+1vkJnB/IsZnKc88jr6Kk4ZkdKsR7DbyHQdZElF+quhahn3NQ6VMwD6 CPhsx/EE+494mQUekW6gvKTM+yzmCugKCxoASD1tGBpw3un9/IZcnx+YG pWhXbGBx3dZFwCNJbqRkcC0s7s2Rm7oGWLc/+Gkp1DaacJCMWSKe0q6CH IASfyqFyXoVdbiZS14CFHN7N9tBE3n1QWTwA3bOZPAXBRfdFXPrt2Km03 ubDuAhtHHKcKEyfcpsukclgM+EjCfqkqs7st5OoKcR1UkFvK/dolAQcOX g==; X-IronPort-AV: E=McAfee;i="6600,9927,10658"; a="402296729" X-IronPort-AV: E=Sophos;i="5.98,287,1673942400"; d="scan'208";a="402296729" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2023 00:08:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10658"; a="747046060" X-IronPort-AV: E=Sophos;i="5.98,287,1673942400"; d="scan'208";a="747046060" Received: from fli4-mobl1.ccr.corp.intel.com (HELO rzhang1-DESK.intel.com) ([10.255.28.30]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2023 00:08:19 -0700 From: Zhang Rui To: linux-pm@vger.kernel.org, rafael.j.wysocki@intel.com, daniel.lezcano@linaro.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 4/5] thermal/core: Enforce paired .bind/.unbind callbacks Date: Fri, 24 Mar 2023 15:08:06 +0800 Message-Id: <20230324070807.6342-4-rui.zhang@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230324070807.6342-1-rui.zhang@intel.com> References: <20230324070807.6342-1-rui.zhang@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The .bind/.unbind callbacks are designed to allow the thermal zone device to bind to/unbind from a matched cooling device, with thermal instances created/deleted. In this sense, .bind/.unbind callbacks must exist in pairs. Signed-off-by: Zhang Rui --- drivers/thermal/thermal_core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 5225d65fb0e0..9c447f22cb39 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1258,6 +1258,11 @@ thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *t if (num_trips > 0 && (!ops->get_trip_type || !ops->get_trip_temp) && !trips) return ERR_PTR(-EINVAL); + if ((ops->bind && !ops->unbind) || (!ops->bind && ops->unbind)) { + pr_err("Thermal zone device .bind/.unbind not paired\n"); + return ERR_PTR(-EINVAL); + } + if (!thermal_class) return ERR_PTR(-ENODEV);