From patchwork Mon Nov 30 13:31:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Scally X-Patchwork-Id: 335404 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 631D9C83016 for ; Mon, 30 Nov 2020 13:32:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C27F21D46 for ; Mon, 30 Nov 2020 13:32:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="aCL28tM5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726820AbgK3Nci (ORCPT ); Mon, 30 Nov 2020 08:32:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725939AbgK3Ncg (ORCPT ); Mon, 30 Nov 2020 08:32:36 -0500 Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CD8CC0613D2; Mon, 30 Nov 2020 05:31:55 -0800 (PST) Received: by mail-wm1-x341.google.com with SMTP id a3so25181444wmb.5; Mon, 30 Nov 2020 05:31:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=RJsQiHGqEJvDI1A950rE2xj0EG8wzsrrAHbyxhByNz0=; b=aCL28tM5Keans39iuF0yPmX8N2Zo6DPH4Ma7s7dw4MyY3eGABozdRLlf6DFDkUzn0k HsURvPU0p1ZOQwfMSn1dPSl7KUl4VQsA+pBuvR2GZQWvLyLTETkYDpW4pB50dJGEDAVT Gl6iinIuTEdutRdQFyoMROOJLR4pP0/11oJgm6QgsEmc0wK13XNqqHZKSO8HGXAOcBhP 4uCYVP6WetkhuOaHwSg9W0DMQni9jk5yjPGkx8IebTAGt+GcfUg9covZKsRMekzLILgF 3KA9ikRPV8GB3d3t7E+i3TsSm+P3yO8JCND8N8DtHxCJ8WPkOL/ZQN0kwVMVAMMUT/tV tkIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=RJsQiHGqEJvDI1A950rE2xj0EG8wzsrrAHbyxhByNz0=; b=qkw/s5tU7x9ZX58R34bAXdSqcSsMcoCCbCx98ut4Kf3U7DUENYU/9oWNCyTP1WfwVG K3qiC+0YOVwu81v4SfuJi9JHLu0yiq/NvyHeWKua2sTpuqoeZrwq2FEaFrSmWmOQ/in1 dTqRns3EOWr+9oD7r8JoccWTtIFKA14XwTs+XTeLuH/S53vw0eMB0m5AkT8bcHV4alAN GBUWrFfNYpgIAoZPsETTyK+59mv8F1q2u27GAA6/ugV0RtpWaQvkaYUiVm5H+0ygrI48 22LYYyHe3Z8tJUMVJxHN8q8mLCKHWnR4are7A1c/MJQxFLpcC8StrNOQjCp52iKVhqYs h9WQ== X-Gm-Message-State: AOAM532QGq0W4IKF71YQNxv3rMxukllk4Tl+nwAU6iICi5bAsghFmrKz IPBNiRY0OVx9Wrr9WhXyX2UbvCWl89QW1hv4 X-Google-Smtp-Source: ABdhPJwPbNSwrCgOQ0IMIpkzz/7n/VoBoBA1eGQ5Ii7+/pXicjg96dORtNIdGwUWRytKAvCDAttg9A== X-Received: by 2002:a1c:99d3:: with SMTP id b202mr23640950wme.0.1606743113991; Mon, 30 Nov 2020 05:31:53 -0800 (PST) Received: from valhalla.home ([2.31.224.80]) by smtp.gmail.com with ESMTPSA id g192sm7452333wme.48.2020.11.30.05.31.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Nov 2020 05:31:53 -0800 (PST) From: Daniel Scally To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, linux-media@vger.kernel.org, devel@acpica.org Cc: rjw@rjwysocki.net, lenb@kernel.org, gregkh@linuxfoundation.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, linus.walleij@linaro.org, bgolaszewski@baylibre.com, wsa@kernel.org, yong.zhi@intel.com, sakari.ailus@linux.intel.com, bingbu.cao@intel.com, tian.shu.qiu@intel.com, mchehab@kernel.org, robert.moore@intel.com, erik.kaneda@intel.com, pmladek@suse.com, rostedt@goodmis.org, sergey.senozhatsky@gmail.com, linux@rasmusvillemoes.dk, kieran.bingham+renesas@ideasonboard.com, jacopo+renesas@jmondi.org, laurent.pinchart+renesas@ideasonboard.com, jorhand@linux.microsoft.com, kitakar@gmail.com, heikki.krogerus@linux.intel.com, Laurent Pinchart Subject: [PATCH 01/18] property: Return true in fwnode_device_is_available for node types that do not implement this operation Date: Mon, 30 Nov 2020 13:31:12 +0000 Message-Id: <20201130133129.1024662-2-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201130133129.1024662-1-djrscally@gmail.com> References: <20201130133129.1024662-1-djrscally@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Some types of fwnode_handle do not implement the device_is_available() check, such as those created by software_nodes. There isn't really a meaningful way to check for the availability of a device that doesn't actually exist, so if the check isn't implemented just assume that the "device" is present. Suggested-by: Laurent Pinchart Signed-off-by: Daniel Scally --- Changes since RFC v3: patch introduced drivers/base/property.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index 4c43d30145c6..a5ca2306796f 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -785,9 +785,14 @@ EXPORT_SYMBOL_GPL(fwnode_handle_put); /** * fwnode_device_is_available - check if a device is available for use * @fwnode: Pointer to the fwnode of the device. + * + * For fwnode node types that don't implement the .device_is_available() + * operation, this function returns true. */ bool fwnode_device_is_available(const struct fwnode_handle *fwnode) { + if (!fwnode_has_op(fwnode, device_is_available)) + return true; return fwnode_call_bool_op(fwnode, device_is_available); } EXPORT_SYMBOL_GPL(fwnode_device_is_available);