From patchwork Mon Apr 2 14:38:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 894252 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="dBkeSJTY"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40FFCX5lrnz9s29 for ; Tue, 3 Apr 2018 00:36:24 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752196AbeDBOfy (ORCPT ); Mon, 2 Apr 2018 10:35:54 -0400 Received: from fllnx209.ext.ti.com ([198.47.19.16]:53679 "EHLO fllnx209.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751418AbeDBOfp (ORCPT ); Mon, 2 Apr 2018 10:35:45 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by fllnx209.ext.ti.com (8.15.1/8.15.1) with ESMTP id w32EZR4d017939; Mon, 2 Apr 2018 09:35:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1522679727; bh=GOLNCrk1T48W7MAq/90GQzgVf/o9rj616oIX8qS+Pc0=; h=From:To:Subject:Date:In-Reply-To:References; b=dBkeSJTYRIXClAJ0xdg8DHK1s7M8wycCa1EAKOiAjOR/7KTK2oV9Khp3yzkN0NwYU 4sAE3gclh7lKtR0FI2ad6FUSPF2IhLnhiAih8kvoFy9ZBjNiccxLXCB5OESaAXAzcy uVpxgDomoISCeT9sVWVBadlx4U5i3mOKOaT27qUQ= Received: from DLEE109.ent.ti.com (dlee109.ent.ti.com [157.170.170.41]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id w32EZRV6016380; Mon, 2 Apr 2018 09:35:27 -0500 Received: from DLEE103.ent.ti.com (157.170.170.33) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1261.35; Mon, 2 Apr 2018 09:35:27 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1261.35 via Frontend Transport; Mon, 2 Apr 2018 09:35:27 -0500 Received: from ula0868495.am.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id w32EZKc8025486; Mon, 2 Apr 2018 09:35:26 -0500 From: Murali Karicheri To: , , , , , , , , , Subject: [net-next PATCH v3 11/11] net: netcp: support probe deferral Date: Mon, 2 Apr 2018 10:38:01 -0400 Message-ID: <1522679881-25643-12-git-send-email-m-karicheri2@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1522679881-25643-1-git-send-email-m-karicheri2@ti.com> References: <1522679881-25643-1-git-send-email-m-karicheri2@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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;