From patchwork Fri Mar 27 16:36:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 11462611 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D02D66CA for ; Fri, 27 Mar 2020 16:37:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 47F49206E6 for ; Fri, 27 Mar 2020 16:37:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="iIzovfDx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 47F49206E6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=h5Od6GDt6qDyzO9v27rD6QUX/HXxfurjf2wl/bCa2fM=; b=iIzovfDxVJkOYoFDUWlU9MyhEO 9UY0X3DQRJ2St+pWXQdwNgHltdrYwP6xM/TeCiymjMtBQhYoyAlxtC/U+kUBTUsg3Oi5qriB0NZSQ +LToJ/AZFWBjqxFifmp203mgdQ51lfeRCOYsBpGRdabXCTkuP/DxDuVKIEYZ/AIGQSvGwH0SIMNUj tbPKkddAKVglbB4UwEvtUyiuf1bJ3WmNrIYVm0lj83PdefrLD/VzMVZL3txfj3pReNfNl7DNYJKAd xj9VJ/h+T3GoBATUMvl643BLUqIDt6zQj+qUeQofxiTz1iVTZGTLdF2UjFvpYYuQXxWili6/OAtsx dtSQNz8g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHrzT-0006Xk-Kk; Fri, 27 Mar 2020 16:37:51 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHryp-0005wS-F1 for linux-arm-kernel@lists.infradead.org; Fri, 27 Mar 2020 16:37:13 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AE34F1FB; Fri, 27 Mar 2020 09:37:10 -0700 (PDT) Received: from usa.arm.com (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C1BCD3F71F; Fri, 27 Mar 2020 09:37:09 -0700 (PDT) From: Sudeep Holla To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Peng Fan Subject: [PATCH 3/4] firmware: arm_scmi: Check shmem property for channel availablity Date: Fri, 27 Mar 2020 16:36:53 +0000 Message-Id: <20200327163654.13389-4-sudeep.holla@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200327163654.13389-1-sudeep.holla@arm.com> References: <20200327163654.13389-1-sudeep.holla@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200327_093711_578442_AD80748F X-CRM114-Status: UNSURE ( 8.24 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: f.fainelli@gmail.com, linux-imx@nxp.com, Sudeep Holla MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Instead of declaring the channel availabilty unconditionally, let us check for the presence of "shmem" property and return the channel availablity accordingly. Signed-off-by: Sudeep Holla Reviewed-by: Peng Fan --- drivers/firmware/arm_scmi/smc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c index dd4b54c29679..5929c668dc1d 100644 --- a/drivers/firmware/arm_scmi/smc.c +++ b/drivers/firmware/arm_scmi/smc.c @@ -33,6 +33,11 @@ struct scmi_smc { static bool smc_chan_available(struct device *dev, int idx) { + struct device_node *np = of_parse_phandle(dev->of_node, "shmem", 0); + if (!np) + return false; + + of_node_put(np); return true; }