netdev - [PATCH v2 1/16][BNX2]: Block MII access when ifdown.

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Message-ID: <1178177286.4909.65.camel@dell>
Date:	Thu, 03 May 2007 00:28:06 -0700
From:	"Michael Chan" <mchan@...adcom.com>
To:	"David Miller" <davem@...emloft.net>
cc:	"netdev" <netdev@...r.kernel.org>
Subject: [PATCH v2 1/16][BNX2]:  Block MII access when ifdown.

[BNX2]: Block MII access when ifdown.

The device may be in D3hot state and should not allow MII register
access.

Signed-off-by: Michael Chan <mchan@...adcom.com>

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index f98a220..9f0a067 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -5562,6 +5562,9 @@ bnx2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	case SIOCGMIIREG: {
 		u32 mii_regval;
 
+		if (!netif_running(dev))
+			return -EAGAIN;
+
 		spin_lock_bh(&bp->phy_lock);
 		err = bnx2_read_phy(bp, data->reg_num & 0x1f, &mii_regval);
 		spin_unlock_bh(&bp->phy_lock);
@@ -5575,6 +5578,9 @@ bnx2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
 
+		if (!netif_running(dev))
+			return -EAGAIN;
+
 		spin_lock_bh(&bp->phy_lock);
 		err = bnx2_write_phy(bp, data->reg_num & 0x1f, data->val_in);
 		spin_unlock_bh(&bp->phy_lock);


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