Author: yongari
Date: Tue Aug 24 18:52:24 2010
New Revision: 211767
URL: http://svn.freebsd.org/changeset/base/211767

Log:
  Remove unnecessary controller reinitialization.
  
  PR:   kern/87506

Modified:
  head/sys/pci/if_rl.c

Modified: head/sys/pci/if_rl.c
==============================================================================
--- head/sys/pci/if_rl.c        Tue Aug 24 18:44:12 2010        (r211766)
+++ head/sys/pci/if_rl.c        Tue Aug 24 18:52:24 2010        (r211767)
@@ -1302,6 +1302,7 @@ rl_rxeof(struct rl_softc *sc)
                    total_len < ETHER_MIN_LEN ||
                    total_len > ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN) {
                        ifp->if_ierrors++;
+                       ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
                        rl_init_locked(sc);
                        return (rx_npkts);
                }
@@ -1413,6 +1414,7 @@ rl_txeof(struct rl_softc *sc)
                                CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG);
                        oldthresh = sc->rl_txthresh;
                        /* error recovery */
+                       ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
                        rl_init_locked(sc);
                        /* restore original threshold */
                        sc->rl_txthresh = oldthresh;
@@ -1606,8 +1608,10 @@ rl_poll_locked(struct ifnet *ifp, enum p
 
                /* XXX We should check behaviour on receiver stalls. */
 
-               if (status & RL_ISR_SYSTEM_ERR)
+               if (status & RL_ISR_SYSTEM_ERR) {
+                       ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
                        rl_init_locked(sc);
+               }
        }
        return (rx_npkts);
 }
@@ -1645,8 +1649,10 @@ rl_intr(void *arg)
                        rl_rxeof(sc);
                if ((status & RL_ISR_TX_OK) || (status & RL_ISR_TX_ERR))
                        rl_txeof(sc);
-               if (status & RL_ISR_SYSTEM_ERR)
+               if (status & RL_ISR_SYSTEM_ERR) {
+                       ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
                        rl_init_locked(sc);
+               }
        }
 
        if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
@@ -1808,6 +1814,9 @@ rl_init_locked(struct rl_softc *sc)
 
        mii = device_get_softc(sc->rl_miibus);
 
+       if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
+               return;
+
        /*
         * Cancel pending I/O and free all RX/TX buffers.
         */
@@ -2036,6 +2045,7 @@ rl_watchdog(struct rl_softc *sc)
 
        rl_txeof(sc);
        rl_rxeof(sc);
+       sc->rl_ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
        rl_init_locked(sc);
 }
 
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