bnx2: Prevent ethtool -s from crashing when device is down.
The device may be in D3-hot state and may crash if we try to
configure the speed settings by accessing the registers.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index ad61cfd..e9cfb02 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -6215,6 +6215,12 @@
!(bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP))
goto err_out_unlock;
+ /* If device is down, we can store the settings only if the user
+ * is setting the currently active port.
+ */
+ if (!netif_running(dev) && cmd->port != bp->phy_port)
+ goto err_out_unlock;
+
if (cmd->autoneg == AUTONEG_ENABLE) {
autoneg |= AUTONEG_SPEED;
@@ -6272,7 +6278,12 @@
bp->req_line_speed = req_line_speed;
bp->req_duplex = req_duplex;
- err = bnx2_setup_phy(bp, cmd->port);
+ err = 0;
+ /* If device is down, the new settings will be picked up when it is
+ * brought up.
+ */
+ if (netif_running(dev))
+ err = bnx2_setup_phy(bp, cmd->port);
err_out_unlock:
spin_unlock_bh(&bp->phy_lock);