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From: Christian Ruppert <christian.ruppert@abilis.com>
To: netdev@vger.kernel.org
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Christian Ruppert <christian.ruppert@abilis.com>
Subject: [PATCH] stmmac: prevent interrupt loop with MMC RX IPC Counter
Date: Wed, 10 Apr 2013 09:56:04 +0200	[thread overview]
Message-ID: <1365580564-9149-1-git-send-email-christian.ruppert@abilis.com> (raw)
In-Reply-To: <511E51A9.9020908@st.com>

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 <christian.ruppert@abilis.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
---
 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

  reply	other threads:[~2013-04-10  8:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-15 13:15 [PATCH] Prevent interrupt loop with DWMAC MMC RX IPC Counter Christian Ruppert
2013-02-15 13:46 ` Giuseppe CAVALLARO
2013-02-15 14:48   ` Christian Ruppert
2013-02-15 14:58     ` [PATCH v2] " Christian Ruppert
2013-02-15 15:18       ` Giuseppe CAVALLARO
2013-04-10  7:56         ` Christian Ruppert [this message]
2013-04-11 20:03           ` [PATCH] stmmac: prevent interrupt loop with " David Miller
2013-02-15 15:17     ` [PATCH] Prevent interrupt loop with DWMAC " Giuseppe CAVALLARO

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