[PATCH v3 net-next 14/15] net: sgi: ioc3-eth: protect emcr in all cases

[Thomas Bogendoerfer]

emcr in private struct wasn't always protected by spinlock.

Signed-off-by: Thomas Bogendoerfer <tbogendoer...@suse.de>
---
 drivers/net/ethernet/sgi/ioc3-eth.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c 
b/drivers/net/ethernet/sgi/ioc3-eth.c
index 971986433d4c..963ed0f9787c 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -729,6 +729,8 @@ static inline void ioc3_setup_duplex(struct ioc3_private 
*ip)
 {
        struct ioc3_ethregs *regs = ip->regs;
 
+       spin_lock_irq(&ip->ioc3_lock);
+
        if (ip->mii.full_duplex) {
                writel(ETCSR_FD, &regs->etcsr);
                ip->emcr |= EMCR_DUPLEX;
@@ -737,6 +739,8 @@ static inline void ioc3_setup_duplex(struct ioc3_private 
*ip)
                ip->emcr &= ~EMCR_DUPLEX;
        }
        writel(ip->emcr, &regs->emcr);
+
+       spin_unlock_irq(&ip->ioc3_lock);
 }
 
 static void ioc3_timer(struct timer_list *t)
@@ -1625,6 +1629,8 @@ static void ioc3_set_multicast_list(struct net_device 
*dev)
 
        netif_stop_queue(dev);                          /* Lock out others. */
 
+       spin_lock_irq(&ip->ioc3_lock);
+
        if (dev->flags & IFF_PROMISC) {                 /* Set promiscuous.  */
                ip->emcr |= EMCR_PROMISC;
                writel(ip->emcr, &regs->emcr);
@@ -1653,6 +1659,8 @@ static void ioc3_set_multicast_list(struct net_device 
*dev)
                writel(ip->ehar_l, &regs->ehar_l);
        }
 
+       spin_unlock_irq(&ip->ioc3_lock);
+
        netif_wake_queue(dev);                  /* Let us get going again. */
 }
 
-- 
2.13.7