From patchwork Fri Feb 15 14:58:02 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v2] Prevent interrupt loop with DWMAC MMC RX IPC Counter Date: Fri, 15 Feb 2013 04:58:02 -0000 From: Christian Ruppert X-Patchwork-Id: 220756 Message-Id: <1360940282-27211-1-git-send-email-christian.ruppert@abilis.com> To: Giuseppe CAVALLARO Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Vineet Gupta , Christian Ruppert 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).