From patchwork Fri Feb 15 14:58:02 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Ruppert X-Patchwork-Id: 220756 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 20EBE2C0085 for ; Sat, 16 Feb 2013 01:58:58 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422687Ab3BOO6h (ORCPT ); Fri, 15 Feb 2013 09:58:37 -0500 Received: from mail.abilis.ch ([195.70.19.74]:25412 "EHLO mail.abilis.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422656Ab3BOO6g (ORCPT ); Fri, 15 Feb 2013 09:58:36 -0500 Received: from vzimbra0.lan (vzimbra0.lan [10.41.22.42]) by mail.abilis.ch (8.13.8/8.13.8) with ESMTP id r1FEwHA6005911; Fri, 15 Feb 2013 15:58:18 +0100 Received: from ab42.lan (ab42.lan [10.41.22.170]) by vzimbra0.lan (Postfix) with ESMTP id CE5AF901452; Fri, 15 Feb 2013 15:58:17 +0100 (CET) Received: by ab42.lan (Postfix, from userid 2100) id C69C01520; Fri, 15 Feb 2013 15:58:17 +0100 (CET) From: Christian Ruppert To: Giuseppe CAVALLARO Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Vineet Gupta , Christian Ruppert Subject: [PATCH v2] Prevent interrupt loop with DWMAC MMC RX IPC Counter Date: Fri, 15 Feb 2013 15:58:02 +0100 Message-Id: <1360940282-27211-1-git-send-email-christian.ruppert@abilis.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <20130215144815.GA31098@ab42.lan> References: <20130215144815.GA31098@ab42.lan> X-Spam-Status: No, score=-1.5 required=5.0 tests=ALL_TRUSTED,BAYES_05 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on dmmail0.lan Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org If the DesignWare MAC is synthesised with MMC RX IPC Counter, an unmanaged and unacknowledged interrupt is generated after some time of operation. This patch masks the undesired interrupts. Signed-off-by: Christian Ruppert Acked-by: Giuseppe Cavallaro --- drivers/net/ethernet/stmicro/stmmac/mmc_core.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c index 0c74a70..50617c5 100644 --- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c @@ -149,6 +149,7 @@ void dwmac_mmc_intr_all_mask(void __iomem *ioaddr) { writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_INTR_MASK); writel(MMC_DEFAULT_MASK, ioaddr + MMC_TX_INTR_MASK); + writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_IPC_INTR_MASK); } /* This reads the MAC core counters (if actaully supported).