bnx2: Check netif_running() in all ethtool operations.

We need to check netif_running() state in most ethtool operations
and properly handle the !netif_running() state where the chip is
in an uninitailzed state or low power state that may not accept
any MMIO.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 32 insertions, 8 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index b35f440361d..21711c753a0 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -3248,6 +3248,9 @@ bnx2_set_rx_mode(struct net_device *dev)
         struct dev_addr_list *uc_ptr;
         int i;
 
+        if (!netif_running(dev))
+                return;
+
         spin_lock_bh(&bp->phy_lock);
 
         rx_mode = bp->rx_mode & ~(BNX2_EMAC_RX_MODE_PROMISCUOUS |
@@ -5521,6 +5524,9 @@ bnx2_test_link(struct bnx2 *bp)
 {
         u32 bmsr;
 
+        if (!netif_running(bp->dev))
+                return -ENODEV;
+
         if (bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP) {
                 if (bp->link_up)
                         return 0;
@@ -6485,6 +6491,9 @@ bnx2_nway_reset(struct net_device *dev)
         struct bnx2 *bp = netdev_priv(dev);
         u32 bmcr;
 
+        if (!netif_running(dev))
+                return -EAGAIN;
+
         if (!(bp->autoneg & AUTONEG_SPEED)) {
                 return -EINVAL;
         }
@@ -6540,6 +6549,9 @@ bnx2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
         struct bnx2 *bp = netdev_priv(dev);
         int rc;
 
+        if (!netif_running(dev))
+                return -EAGAIN;
+
         /* parameters already validated in ethtool_get_eeprom */
 
         rc = bnx2_nvram_read(bp, eeprom->offset, eebuf, eeprom->len);
@@ -6554,6 +6566,9 @@ bnx2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
         struct bnx2 *bp = netdev_priv(dev);
         int rc;
 
+        if (!netif_running(dev))
+                return -EAGAIN;
+
         /* parameters already validated in ethtool_set_eeprom */
 
         rc = bnx2_nvram_write(bp, eeprom->offset, eebuf, eeprom->len);
@@ -6718,11 +6733,11 @@ bnx2_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam *epause)
                 bp->autoneg &= ~AUTONEG_FLOW_CTRL;
         }
 
-        spin_lock_bh(&bp->phy_lock);
-
-        bnx2_setup_phy(bp, bp->phy_port);
-
-        spin_unlock_bh(&bp->phy_lock);
+        if (netif_running(dev)) {
+                spin_lock_bh(&bp->phy_lock);
+                bnx2_setup_phy(bp, bp->phy_port);
+                spin_unlock_bh(&bp->phy_lock);
+        }
 
         return 0;
 }
@@ -6913,6 +6928,8 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf)
 {
         struct bnx2 *bp = netdev_priv(dev);
 
+        bnx2_set_power_state(bp, PCI_D0);
+
         memset(buf, 0, sizeof(u64) * BNX2_NUM_TESTS);
         if (etest->flags & ETH_TEST_FL_OFFLINE) {
                 int i;
@@ -6932,9 +6949,8 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf)
                 if ((buf[2] = bnx2_test_loopback(bp)) != 0)
                         etest->flags |= ETH_TEST_FL_FAILED;
 
-                if (!netif_running(bp->dev)) {
-                        bnx2_reset_chip(bp, BNX2_DRV_MSG_CODE_RESET);
-                }
+                if (!netif_running(bp->dev))
+                        bnx2_shutdown_chip(bp);
                 else {
                         bnx2_init_nic(bp, 1);
                         bnx2_netif_start(bp);
@@ -6962,6 +6978,8 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf)
                 etest->flags |= ETH_TEST_FL_FAILED;
 
         }
+        if (!netif_running(bp->dev))
+                bnx2_set_power_state(bp, PCI_D3hot);
 }
 
 static void
@@ -7027,6 +7045,8 @@ bnx2_phys_id(struct net_device *dev, u32 data)
         int i;
         u32 save;
 
+        bnx2_set_power_state(bp, PCI_D0);
+
         if (data == 0)
                 data = 2;
 
@@ -7051,6 +7071,10 @@ bnx2_phys_id(struct net_device *dev, u32 data)
         }
         REG_WR(bp, BNX2_EMAC_LED, 0);
         REG_WR(bp, BNX2_MISC_CFG, save);
+
+        if (!netif_running(dev))
+                bnx2_set_power_state(bp, PCI_D3hot);
+
         return 0;
 }