From 1269a8a64a37c8a06af672f4cff4fed16a478734 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Mon, 23 Jan 2006 16:11:03 -0800 Subject: [PATCH] [BNX2]: Workaround hw interrupt bug Add workaround for a hardware interrupt issue. When using INTA, unmasking of the interrupt and the tag update should be done separately to avoid some spurious interrupts, Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/bnx2.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index ec08f833c32d..7b99cf26a129 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -315,6 +315,10 @@ bnx2_enable_int(struct bnx2 *bp) { u32 val; + REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, + BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | + BNX2_PCICFG_INT_ACK_CMD_MASK_INT | bp->last_status_idx); + REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | bp->last_status_idx); @@ -1892,9 +1896,20 @@ bnx2_poll(struct net_device *dev, int *budget) if (!bnx2_has_work(bp)) { netif_rx_complete(dev); + if (likely(bp->flags & USING_MSI_FLAG)) { + REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, + BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | + bp->last_status_idx); + return 0; + } REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, - BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | - bp->last_status_idx); + BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | + BNX2_PCICFG_INT_ACK_CMD_MASK_INT | + bp->last_status_idx); + + REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD, + BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | + bp->last_status_idx); return 0; }