From patchwork Thu Jun 2 06:48:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 9149401 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 BA76C60467 for ; Thu, 2 Jun 2016 07:29:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ABD3D2654B for ; Thu, 2 Jun 2016 07:29:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A02A026B39; Thu, 2 Jun 2016 07:29:36 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 43F2C2654B for ; Thu, 2 Jun 2016 07:29:36 +0000 (UTC) Received: from localhost ([::1]:45803 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8N4R-0002hB-1g for patchwork-qemu-devel@patchwork.kernel.org; Thu, 02 Jun 2016 03:29:35 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47615) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8MS5-0004aV-4W for qemu-devel@nongnu.org; Thu, 02 Jun 2016 02:49:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b8MS4-0005c8-BT for qemu-devel@nongnu.org; Thu, 02 Jun 2016 02:49:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59857) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8MS4-0005c2-5n for qemu-devel@nongnu.org; Thu, 02 Jun 2016 02:49:56 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B5C604944E; Thu, 2 Jun 2016 06:49:55 +0000 (UTC) Received: from jason-ThinkPad-T450s.redhat.com (vpn1-4-234.pek2.redhat.com [10.72.4.234]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u526mQGD005724; Thu, 2 Jun 2016 02:49:54 -0400 From: Jason Wang To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Thu, 2 Jun 2016 14:48:18 +0800 Message-Id: <1464850102-17829-28-git-send-email-jasowang@redhat.com> In-Reply-To: <1464850102-17829-1-git-send-email-jasowang@redhat.com> References: <1464850102-17829-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Thu, 02 Jun 2016 06:49:55 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL V4 27/31] i.MX: reset TX/RX descriptors when FEC is disabled. X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , Jean-Christophe Dubois Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Jean-Christophe Dubois According to the FEC chapter of i.MX25 reference manual RX adn TX descriptors are reseted when the FEC device is disabled through ECR. Signed-off-by: Jean-Christophe Dubois Signed-off-by: Jason Wang --- hw/net/imx_fec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c index 768181e..7369cfa 100644 --- a/hw/net/imx_fec.c +++ b/hw/net/imx_fec.c @@ -454,6 +454,8 @@ static void imx_fec_write(void *opaque, hwaddr addr, } if ((s->ecr & FEC_EN) == 0) { s->rx_enabled = 0; + s->rx_descriptor = s->erdsr; + s->tx_descriptor = s->etdsr; } break; case 0x040: /* MMFR */