fec: don't enable irqs in hard irq context

fec_enet_mii, fec_enet_rx and fec_enet_tx are both only called by
fec_enet_interrupt in interrupt context.  So they must not use
spin_lock_irq/spin_unlock_irq.

This fixes:
	WARNING: at kernel/lockdep.c:2140 trace_hardirqs_on_caller+0x130/0x194()
	...

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Matt Waddel <Matt.Waddel@freescale.com>
Cc: netdev@vger.kernel.org
Cc: Tim Sander <tim01@vlsi.informatik.tu-darmstadt.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index e730da2..b472018 100644 (file)
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -427,7 +427,7 @@ fec_enet_tx(struct net_device *dev)
        struct  sk_buff *skb;
 
        fep = netdev_priv(dev);
-       spin_lock_irq(&fep->hw_lock);
+       spin_lock(&fep->hw_lock);
        bdp = fep->dirty_tx;
 
        while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) {
@@ -486,7 +486,7 @@ fec_enet_tx(struct net_device *dev)
                }
        }
        fep->dirty_tx = bdp;
-       spin_unlock_irq(&fep->hw_lock);
+       spin_unlock(&fep->hw_lock);
 }
 
 
@@ -509,7 +509,7 @@ fec_enet_rx(struct net_device *dev)
        flush_cache_all();
 #endif
 
-       spin_lock_irq(&fep->hw_lock);
+       spin_lock(&fep->hw_lock);
 
        /* First, grab all of the stats for the incoming packet.
         * These get messed up if we get called due to a busy condition.
@@ -604,7 +604,7 @@ rx_processing_done:
        }
        fep->cur_rx = bdp;
 
-       spin_unlock_irq(&fep->hw_lock);
+       spin_unlock(&fep->hw_lock);
 }
 
 /* called from interrupt context */
@@ -615,7 +615,7 @@ fec_enet_mii(struct net_device *dev)
        mii_list_t      *mip;
 
        fep = netdev_priv(dev);
-       spin_lock_irq(&fep->mii_lock);
+       spin_lock(&fep->mii_lock);
 
        if ((mip = mii_head) == NULL) {
                printk("MII and no head!\n");
@@ -633,7 +633,7 @@ fec_enet_mii(struct net_device *dev)
                writel(mip->mii_regval, fep->hwp + FEC_MII_DATA);
 
 unlock:
-       spin_unlock_irq(&fep->mii_lock);
+       spin_unlock(&fep->mii_lock);
 }
 
 static int