From: Haavard Skinnemoen Date: Fri, 16 Feb 2007 14:59:06 +0000 (+0100) Subject: macb: Remove inappropriate spinlocks around mii calls X-Git-Tag: v2.6.21-rc1~74^2~13 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=140e807dd7d6aa68e601f50a10abd5351e06126f;p=linux-2.6-omap-h63xx.git macb: Remove inappropriate spinlocks around mii calls Remove spin_lock_irqsave() around mii_ethtool_gset, mii_ethtool_sset and generic_mii_ioctl. These are unnecessary and harmful because the mii calls may call back into the mdio functions, which may sleep. Pointed out by David Brownell. Signed-off-by: Haavard Skinnemoen Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/macb.c b/drivers/net/macb.c index a41418b3c51..2e9571bf073 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -881,27 +881,15 @@ static struct net_device_stats *macb_get_stats(struct net_device *dev) static int macb_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct macb *bp = netdev_priv(dev); - int ret; - unsigned long flags; - - spin_lock_irqsave(&bp->lock, flags); - ret = mii_ethtool_gset(&bp->mii, cmd); - spin_unlock_irqrestore(&bp->lock, flags); - return ret; + return mii_ethtool_gset(&bp->mii, cmd); } static int macb_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct macb *bp = netdev_priv(dev); - int ret; - unsigned long flags; - - spin_lock_irqsave(&bp->lock, flags); - ret = mii_ethtool_sset(&bp->mii, cmd); - spin_unlock_irqrestore(&bp->lock, flags); - return ret; + return mii_ethtool_sset(&bp->mii, cmd); } static void macb_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) @@ -930,17 +918,11 @@ static struct ethtool_ops macb_ethtool_ops = { static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { struct macb *bp = netdev_priv(dev); - int ret; - unsigned long flags; if (!netif_running(dev)) return -EINVAL; - spin_lock_irqsave(&bp->lock, flags); - ret = generic_mii_ioctl(&bp->mii, if_mii(rq), cmd, NULL); - spin_unlock_irqrestore(&bp->lock, flags); - - return ret; + return generic_mii_ioctl(&bp->mii, if_mii(rq), cmd, NULL); } static ssize_t macb_mii_show(const struct device *_dev, char *buf,