From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422720Ab3BOO6h (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 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> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 --- 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). -- 1.7.1