[patch 25/69] BNX2: Block MII access when ifdown.

[Chris Wright <chrisw@sous-sol.org>]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From:  <mchan@broadcom.com>

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

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---

---
 drivers/net/bnx2.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- linux-2.6.21.1.orig/drivers/net/bnx2.c
+++ linux-2.6.21.1/drivers/net/bnx2.c
@@ -5564,6 +5564,9 @@ bnx2_ioctl(struct net_device *dev, struc
 	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);
@@ -5577,6 +5580,9 @@ bnx2_ioctl(struct net_device *dev, struc
 		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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