From patchwork Tue Mar 27 16:31:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 10310763 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0FEC7605B4 for ; Tue, 27 Mar 2018 16:33:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8D9F0294A3 for ; Tue, 27 Mar 2018 16:32:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 820FD294F2; Tue, 27 Mar 2018 16:32:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EE0B52955F for ; Tue, 27 Mar 2018 16:32:58 +0000 (UTC) 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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EmZEI9IZj5um1Wix1JJb8WQ4sXl+s3aNUZojAmqSWaA=; b=TxBXiJcmz6uM4v a/5cvZSYFVNYmV/+8xV3omQPU+R9UI4Rz3yi0U9tal6CYeMCwYVIZwwaVNKUdUZ3L5iiddWP57Ewm 5oi9tmdYhmoYVgwCmB5DmAhR8aIK36vQT8Xu1pYciA2Li/2pSF49wpO47gqvyB2HQ7dYayxQm5+cI 7tAD6fiAz7BqlxKo6Nhed/0fJh99lhLsj7CnWdkdT4TGQMO45y4lWM+5oWUv5oJ3dtKWqKEuPRk3Q cg64R+jxX9GqHW3+e6DiTAaVAXe0riSEuWn73fH3CKDpW1j0rYNIpX30SgwZd/dRRj7jYlcJCQFFT H3MMvQ/1E4N2dkkYVRqQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f0rWd-0001Eq-Hq; Tue, 27 Mar 2018 16:32:43 +0000 Received: from lelnx193.ext.ti.com ([198.47.27.77]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f0rTa-0005oy-De for linux-arm-kernel@lists.infradead.org; Tue, 27 Mar 2018 16:29:37 +0000 Received: from dlelxv84.itg.ti.com ([172.17.0.246]) by lelnx193.ext.ti.com (8.15.1/8.15.1) with ESMTP id w2RGTIE2020963; Tue, 27 Mar 2018 11:29:18 -0500 Received: from DLEE112.ent.ti.com (dlee112.ent.ti.com [157.170.170.23]) by dlelxv84.itg.ti.com (8.14.3/8.13.8) with ESMTP id w2RGTIx8020261; Tue, 27 Mar 2018 11:29:18 -0500 Received: from DLEE108.ent.ti.com (157.170.170.38) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1261.35; Tue, 27 Mar 2018 11:29:18 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1261.35 via Frontend Transport; Tue, 27 Mar 2018 11:29:18 -0500 Received: from ula0868495.am.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w2RGTBSg015407; Tue, 27 Mar 2018 11:29:17 -0500 From: Murali Karicheri To: , , , , , , , , , Subject: [net-next PATCH v2 10/10] net: netcp: support probe deferral Date: Tue, 27 Mar 2018 12:31:49 -0400 Message-ID: <1522168309-12338-11-git-send-email-m-karicheri2@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1522168309-12338-1-git-send-email-m-karicheri2@ti.com> References: <1522168309-12338-1-git-send-email-m-karicheri2@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180327_092934_554151_525CD43A X-CRM114-Status: GOOD ( 12.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The netcp driver shouldn't proceed until the knav qmss and dma devices are ready. So return -EPROBE_DEFER if these devices are not ready. Signed-off-by: Murali Karicheri --- drivers/net/ethernet/ti/netcp_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c index 9c51b25..736f6f7 100644 --- a/drivers/net/ethernet/ti/netcp_core.c +++ b/drivers/net/ethernet/ti/netcp_core.c @@ -2158,6 +2158,10 @@ static int netcp_probe(struct platform_device *pdev) struct netcp_module *module; int ret; + if (!knav_dma_device_ready() || + !knav_qmss_device_ready()) + return -EPROBE_DEFER; + if (!node) { dev_err(dev, "could not find device info\n"); return -ENODEV;