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Commit c8f15686 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by David S. Miller
Browse files

netdev: bunch of drivers: avoid WARN at net/core/dev.c:1328 



The drivers were touching net queue before it has been started, so
without this patch, the drivers will potentially WARN at
net/core/dev.c:1328.

I don't have the hardware for the drivers below, so this patch is
untested, and thus should be carefully peer reviewed.

tc35815.c
au1000_eth.c
bfin_mac.c
macb.c
^ The four drivers are using phylib, they're calling netif_start_queue()
in open() callback. So trivially remove netif_tx_schedule_all().
Phylib will handle netif_carrier_*().

cpmac.c
fec_mpc52xx.c
fs_enet/fs_enet-main.c
sh_eth.c
^ The same as above, but these were also needlessly calling
netif_carrier_*() functions. So removed queue calls and also remove
carrier calls, since phylib will handle it. fs_enet-main.c also didn't
call netif_start_queue() at open(), this is fixed now.

Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3d0f24a7

drivers/net/au1000_eth.c

+2 −3
Original line number Diff line number Diff line
@@ -911,9 +911,8 @@ au1000_adjust_link(struct net_device *dev) 
	if(phydev->link != aup->old_link) {

		// link state changed



		if (phydev->link) // link went up

			netif_tx_schedule_all(dev);

		else { // link went down

		if (!phydev->link) {

			/* link went down */

			aup->old_speed = 0;

			aup->old_duplex = -1;

		}

drivers/net/bfin_mac.c

+0 −1
Original line number Diff line number Diff line
@@ -357,7 +357,6 @@ static void bfin_mac_adjust_link(struct net_device *dev) 
		if (!lp->old_link) {

			new_state = 1;

			lp->old_link = 1;

			netif_tx_schedule_all(dev);

		}

	} else if (lp->old_link) {

		new_state = 1;

drivers/net/cpmac.c

+0 −2
Original line number Diff line number Diff line
@@ -945,10 +945,8 @@ static void cpmac_adjust_link(struct net_device *dev) 
		if (!priv->oldlink) {

			new_state = 1;

			priv->oldlink = 1;

			netif_tx_schedule_all(dev);

		}

	} else if (priv->oldlink) {

		netif_tx_stop_all_queues(dev);

		new_state = 1;

		priv->oldlink = 0;

		priv->oldspeed = 0;

drivers/net/fec_mpc52xx.c

+0 −5
Original line number Diff line number Diff line
@@ -197,9 +197,6 @@ static void mpc52xx_fec_adjust_link(struct net_device *dev) 
		if (priv->link == PHY_DOWN) {

			new_state = 1;

			priv->link = phydev->link;

			netif_tx_schedule_all(dev);

			netif_carrier_on(dev);

			netif_start_queue(dev);

		}



	} else if (priv->link) {
@@ -207,8 +204,6 @@ static void mpc52xx_fec_adjust_link(struct net_device *dev) 
		priv->link = PHY_DOWN;

		priv->speed = 0;

		priv->duplex = -1;

		netif_stop_queue(dev);

		netif_carrier_off(dev);

	}



	if (new_state && netif_msg_link(priv))

drivers/net/fs_enet/fs_enet-main.c

+2 −5
Original line number Diff line number Diff line
@@ -738,9 +738,6 @@ static void generic_adjust_link(struct net_device *dev) 
		if (!fep->oldlink) {

			new_state = 1;

			fep->oldlink = 1;

			netif_tx_schedule_all(dev);

			netif_carrier_on(dev);

			netif_start_queue(dev);

		}



		if (new_state)
@@ -750,8 +747,6 @@ static void generic_adjust_link(struct net_device *dev) 
		fep->oldlink = 0;

		fep->oldspeed = 0;

		fep->oldduplex = -1;

		netif_carrier_off(dev);

		netif_stop_queue(dev);

	}



	if (new_state && netif_msg_link(fep))
@@ -826,6 +821,8 @@ static int fs_enet_open(struct net_device *dev) 
	}

	phy_start(fep->phydev);



	netif_start_queue(dev);



	return 0;

}