From mboxrd@z Thu Jan 1 00:00:00 1970 From: Giuseppe CAVALLARO Subject: Re: [PATCH v2] Prevent interrupt loop with DWMAC MMC RX IPC Counter Date: Fri, 15 Feb 2013 16:18:01 +0100 Message-ID: <511E51A9.9020908@st.com> References: <20130215144815.GA31098@ab42.lan> <1360940282-27211-1-git-send-email-christian.ruppert@abilis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Vineet Gupta To: Christian Ruppert Return-path: In-Reply-To: <1360940282-27211-1-git-send-email-christian.ruppert@abilis.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 2/15/2013 3:58 PM, Christian Ruppert wrote: > 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). >