From be61ea52900b97800effbb68478915d73b5d4df2 Mon Sep 17 00:00:00 2001 From: Weiwei Wang Date: Thu, 18 Sep 2008 08:23:48 +0800 Subject: [PATCH] [netdrvr] convert sbmac tx to spin_lock_irqsave to prevent early IRQ enable Netpoll will call the interrupt handler with interrupts disabled when using kgdboe, so spin_lock_irqsave() should be used instead of spin_lock_irq() to prevent interrupts from being incorrectly enabled. Signed-off-by: Weiwei Wang Signed-off-by: Jeff Garzik --- drivers/net/sb1250-mac.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/sb1250-mac.c b/drivers/net/sb1250-mac.c index fe41e4ec21ec..ce10cfa1ee53 100644 --- a/drivers/net/sb1250-mac.c +++ b/drivers/net/sb1250-mac.c @@ -2069,9 +2069,10 @@ static irqreturn_t sbmac_intr(int irq,void *dev_instance) static int sbmac_start_tx(struct sk_buff *skb, struct net_device *dev) { struct sbmac_softc *sc = netdev_priv(dev); + unsigned long flags; /* lock eth irq */ - spin_lock_irq (&sc->sbm_lock); + spin_lock_irqsave(&sc->sbm_lock, flags); /* * Put the buffer on the transmit ring. If we @@ -2081,14 +2082,14 @@ static int sbmac_start_tx(struct sk_buff *skb, struct net_device *dev) if (sbdma_add_txbuffer(&(sc->sbm_txdma),skb)) { /* XXX save skb that we could not send */ netif_stop_queue(dev); - spin_unlock_irq(&sc->sbm_lock); + spin_unlock_irqrestore(&sc->sbm_lock, flags); return 1; } dev->trans_start = jiffies; - spin_unlock_irq (&sc->sbm_lock); + spin_unlock_irqrestore(&sc->sbm_lock, flags); return 0; } @@ -2568,14 +2569,15 @@ static void sbmac_mii_poll(struct net_device *dev) static void sbmac_tx_timeout (struct net_device *dev) { struct sbmac_softc *sc = netdev_priv(dev); + unsigned long flags; - spin_lock_irq (&sc->sbm_lock); + spin_lock_irqsave(&sc->sbm_lock, flags); dev->trans_start = jiffies; dev->stats.tx_errors++; - spin_unlock_irq (&sc->sbm_lock); + spin_unlock_irqrestore(&sc->sbm_lock, flags); printk (KERN_WARNING "%s: Transmit timed out\n",dev->name); } -- GitLab