From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 3 Sep 2009 10:39:43 +0000 (+0000)
Subject: netdev: Remove redundant checks for CAP_NET_ADMIN in MDIO implementations
X-Git-Tag: v2.6.32-rc1~703^2~102
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=7ab0f2736bfe137a82a7084bbfb5f809da95cabd;p=linux-2.6-block.git

netdev: Remove redundant checks for CAP_NET_ADMIN in MDIO implementations

dev_ioctl() already checks capable(CAP_NET_ADMIN) before calling the
driver's implementation of MDIO ioctls.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/amd8111e.c b/drivers/net/amd8111e.c
index 98b5f462c092..4e6359fff0e1 100644
--- a/drivers/net/amd8111e.c
+++ b/drivers/net/amd8111e.c
@@ -1524,9 +1524,6 @@ static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
 	int err;
 	u32 mii_regval;
 
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
 	switch(cmd) {
 	case SIOCGMIIPHY:
 		data->phy_id = lp->ext_phy_addr;
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c
index e46bf9238692..be2c6cfe6e84 100644
--- a/drivers/net/atl1c/atl1c_main.c
+++ b/drivers/net/atl1c/atl1c_main.c
@@ -534,10 +534,6 @@ static int atl1c_mii_ioctl(struct net_device *netdev,
 		break;
 
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN)) {
-			retval = -EPERM;
-			goto out;
-		}
 		if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
 				    &data->val_out)) {
 			retval = -EIO;
@@ -546,10 +542,6 @@ static int atl1c_mii_ioctl(struct net_device *netdev,
 		break;
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN)) {
-			retval = -EPERM;
-			goto out;
-		}
 		if (data->reg_num & ~(0x1F)) {
 			retval = -EFAULT;
 			goto out;
diff --git a/drivers/net/atl1e/atl1e_main.c b/drivers/net/atl1e/atl1e_main.c
index bca127e65f95..69b830f4b68f 100644
--- a/drivers/net/atl1e/atl1e_main.c
+++ b/drivers/net/atl1e/atl1e_main.c
@@ -453,10 +453,6 @@ static int atl1e_mii_ioctl(struct net_device *netdev,
 		break;
 
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN)) {
-			retval = -EPERM;
-			goto out;
-		}
 		if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
 				    &data->val_out)) {
 			retval = -EIO;
@@ -465,10 +461,6 @@ static int atl1e_mii_ioctl(struct net_device *netdev,
 		break;
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN)) {
-			retval = -EPERM;
-			goto out;
-		}
 		if (data->reg_num & ~(0x1F)) {
 			retval = -EFAULT;
 			goto out;
diff --git a/drivers/net/atlx/atl2.c b/drivers/net/atlx/atl2.c
index 10c06b97001f..ab688862093f 100644
--- a/drivers/net/atlx/atl2.c
+++ b/drivers/net/atlx/atl2.c
@@ -966,8 +966,6 @@ static int atl2_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
 		data->phy_id = 0;
 		break;
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		spin_lock_irqsave(&adapter->stats_lock, flags);
 		if (atl2_read_phy_reg(&adapter->hw,
 			data->reg_num & 0x1F, &data->val_out)) {
@@ -977,8 +975,6 @@ static int atl2_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
 		spin_unlock_irqrestore(&adapter->stats_lock, flags);
 		break;
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		if (data->reg_num & ~(0x1F))
 			return -EFAULT;
 		spin_lock_irqsave(&adapter->stats_lock, flags);
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 1357d548e698..08cddb6ff740 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -7480,9 +7480,6 @@ bnx2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	}
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-
 		if (bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP)
 			return -EOPNOTSUPP;
 
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 7517dc1da650..05916aafa4f1 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -4875,10 +4875,6 @@ static int cas_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		break;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable(CAP_NET_ADMIN)) {
-			rc = -EPERM;
-			break;
-		}
 		spin_lock_irqsave(&cp->lock, flags);
 		cas_mif_poll(cp, 0);
 		rc = cas_phy_write(cp, data->reg_num & 0x1f, data->val_in);
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 2c723b1b8820..c66dd4f9437c 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -4714,8 +4714,6 @@ static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
 		data->phy_id = hw->phy_addr;
 		break;
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		spin_lock_irqsave(&adapter->stats_lock, flags);
 		if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
 				   &data->val_out)) {
@@ -4725,8 +4723,6 @@ static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
 		spin_unlock_irqrestore(&adapter->stats_lock, flags);
 		break;
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		if (data->reg_num & ~(0x1F))
 			return -EFAULT;
 		mii_reg = data->val_in;
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 0f8d9619adea..16c193a6c95c 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -4346,8 +4346,6 @@ static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
 		data->phy_id = adapter->hw.phy.addr;
 		break;
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		switch (data->reg_num & 0x1F) {
 		case MII_BMCR:
 			data->val_out = adapter->phy_regs.bmcr;
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 24ae671e4cb2..8a95234d419c 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -2225,8 +2225,6 @@ static int emac_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
 		return 0;
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		emac_mdio_write(ndev, dev->phy.address, data[1], data[2]);
 		return 0;
 	default:
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 90b0b1b91730..943186b78483 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -4914,8 +4914,6 @@ static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
 		data->phy_id = adapter->hw.phy.addr;
 		break;
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
 		                     &data->val_out))
 			return -EIO;
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index 7d2e610f14ff..21f8754fcf4c 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -380,10 +380,7 @@ int mdio_mii_ioctl(const struct mdio_if_info *mdio,
 		cmd = SIOCGMIIREG;
 		break;
 	case SIOCGMIIREG:
-		break;
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		break;
 	default:
 		return -EOPNOTSUPP;
diff --git a/drivers/net/mii.c b/drivers/net/mii.c
index d81a5d22a3a9..210b2b164b30 100644
--- a/drivers/net/mii.c
+++ b/drivers/net/mii.c
@@ -433,9 +433,6 @@ int generic_mii_ioctl(struct mii_if_info *mii_if,
 	case SIOCSMIIREG: {
 		u16 val = mii_data->val_in;
 
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-
 		if (mii_data->phy_id == mii_if->phy_id) {
 			switch(mii_data->reg_num) {
 			case MII_BMCR: {
diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c
index b52e5d98a3b7..b2722c44337e 100644
--- a/drivers/net/natsemi.c
+++ b/drivers/net/natsemi.c
@@ -3075,8 +3075,6 @@ static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		return 0;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		if (dev->if_port == PORT_TP) {
 			if ((data->phy_id & 0x1f) == np->phy_addr_external) {
  				if ((data->reg_num & 0x1f) == MII_ADVERTISE)
diff --git a/drivers/net/pci-skeleton.c b/drivers/net/pci-skeleton.c
index c47ba3610c58..0c44b48f1384 100644
--- a/drivers/net/pci-skeleton.c
+++ b/drivers/net/pci-skeleton.c
@@ -1784,11 +1784,6 @@ static int netdrv_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
 		break;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable (CAP_NET_ADMIN)) {
-			rc = -EPERM;
-			break;
-		}
-
 		spin_lock_irqsave (&tp->lock, flags);
 		mdio_write (dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
 		spin_unlock_irqrestore (&tp->lock, flags);
diff --git a/drivers/net/pcmcia/3c574_cs.c b/drivers/net/pcmcia/3c574_cs.c
index 382d26520acc..d836af1b9034 100644
--- a/drivers/net/pcmcia/3c574_cs.c
+++ b/drivers/net/pcmcia/3c574_cs.c
@@ -1124,8 +1124,6 @@ static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 			int saved_window;
                        unsigned long flags;
 
-			if (!capable(CAP_NET_ADMIN))
-				return -EPERM;
 			spin_lock_irqsave(&lp->window_lock, flags);
 			saved_window = inw(ioaddr + EL3_CMD) >> 13;
 			EL3WINDOW(4);
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index 3b681c1d7523..4f2fef6cf6dc 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -706,8 +706,6 @@ static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
 	return 0;
     case SIOCSMIIREG:		/* Write MII PHY register. */
-	if (!capable(CAP_NET_ADMIN))
-	    return -EPERM;
 	mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
 	return 0;
     }
diff --git a/drivers/net/pcmcia/pcnet_cs.c b/drivers/net/pcmcia/pcnet_cs.c
index 9ef1c1bfa83d..8996b45ffffb 100644
--- a/drivers/net/pcmcia/pcnet_cs.c
+++ b/drivers/net/pcmcia/pcnet_cs.c
@@ -1204,8 +1204,6 @@ static int ei_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
 	return 0;
     case SIOCSMIIREG:		/* Write MII PHY register. */
-	if (!capable(CAP_NET_ADMIN))
-	    return -EPERM;
 	mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
 	return 0;
     }
diff --git a/drivers/net/pcmcia/xirc2ps_cs.c b/drivers/net/pcmcia/xirc2ps_cs.c
index 68de89167b49..9709dd173ddc 100644
--- a/drivers/net/pcmcia/xirc2ps_cs.c
+++ b/drivers/net/pcmcia/xirc2ps_cs.c
@@ -1575,8 +1575,6 @@ do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	data[3] = mii_rd(ioaddr, data[0] & 0x1f, data[1] & 0x1f);
 	break;
       case SIOCSMIIREG:		/* Write the specified MII register */
-	if (!capable(CAP_NET_ADMIN))
-	    return -EPERM;
 	mii_wr(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2], 16);
 	break;
       default:
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index eda94fcd4065..6b71b0034060 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -324,9 +324,6 @@ int phy_mii_ioctl(struct phy_device *phydev,
 		break;
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-
 		if (mii_data->phy_id == phydev->addr) {
 			switch(mii_data->reg_num) {
 			case MII_BMCR:
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index ec0092affd5d..a91e9b3a3eb6 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1991,8 +1991,6 @@ static int rtl_xmii_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *dat
 		return 0;
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
 		return 0;
 	}
diff --git a/drivers/net/sis900.c b/drivers/net/sis900.c
index d8827323507a..97949d0a699b 100644
--- a/drivers/net/sis900.c
+++ b/drivers/net/sis900.c
@@ -2128,8 +2128,6 @@ static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
 		return 0;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
 		return 0;
 	default:
diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 1a1e68549f5c..62e852e21ab2 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -2496,9 +2496,6 @@ static int skge_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	}
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-
 		spin_lock_bh(&hw->phy_lock);
 		if (hw->chip_id == CHIP_ID_GENESIS)
 			err = xm_phy_write(hw, skge->port, data->reg_num & 0x1f,
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index bab591b418df..00bc65a0aac9 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1214,9 +1214,6 @@ static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	}
 
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-
 		spin_lock_bh(&sky2->phy_lock);
 		err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
 				   data->val_in);
diff --git a/drivers/net/sungem.c b/drivers/net/sungem.c
index e0dfdd246470..305ec3d783db 100644
--- a/drivers/net/sungem.c
+++ b/drivers/net/sungem.c
@@ -2852,9 +2852,7 @@ static int gem_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		break;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable(CAP_NET_ADMIN))
-			rc = -EPERM;
-		else if (!gp->running)
+		if (!gp->running)
 			rc = -EAGAIN;
 		else {
 			__phy_write(gp, data->phy_id & 0x1f, data->reg_num & 0x1f,
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index bd4981052609..7cf80006eafa 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10610,9 +10610,6 @@ static int tg3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		if (tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)
 			break;			/* We have no PHY */
 
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-
 		if (tp->link_config.phy_is_low_power)
 			return -EAGAIN;
 
diff --git a/drivers/net/tlan.c b/drivers/net/tlan.c
index 49e273bceed6..3d31b47332bb 100644
--- a/drivers/net/tlan.c
+++ b/drivers/net/tlan.c
@@ -1004,8 +1004,6 @@ static int TLan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-			if (!capable(CAP_NET_ADMIN))
-				return -EPERM;
 			TLan_MiiWriteReg(dev, data->phy_id & 0x1f,
 					 data->reg_num & 0x1f, data->val_in);
 			return 0;
diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index b89b73c0b30b..6b2330e4206e 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -923,8 +923,6 @@ static int private_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
 		return 0;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable (CAP_NET_ADMIN))
-			return -EPERM;
 		if (regnum & ~0x1f)
 			return -EINVAL;
 		if (data->phy_id == phy) {
diff --git a/drivers/net/tulip/winbond-840.c b/drivers/net/tulip/winbond-840.c
index 3e59397e5386..b38d3b7f6e35 100644
--- a/drivers/net/tulip/winbond-840.c
+++ b/drivers/net/tulip/winbond-840.c
@@ -1470,8 +1470,6 @@ static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		return 0;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		spin_lock_irq(&np->lock);
 		mdio_write(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
 		spin_unlock_irq(&np->lock);
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index ced1446dec04..e04e5bee005c 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -2328,14 +2328,10 @@ static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd
 		miidata->phy_id = readb(&regs->MIIADR) & 0x1f;
 		break;
 	case SIOCGMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
 			return -ETIMEDOUT;
 		break;
 	case SIOCSMIIREG:
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		spin_lock_irqsave(&vptr->lock, flags);
 		err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
 		spin_unlock_irqrestore(&vptr->lock, flags);
diff --git a/drivers/net/yellowfin.c b/drivers/net/yellowfin.c
index 4987040c414b..40ad0dee0406 100644
--- a/drivers/net/yellowfin.c
+++ b/drivers/net/yellowfin.c
@@ -1365,8 +1365,6 @@ static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		return 0;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
 		if (data->phy_id == np->phys[0]) {
 			u16 value = data->val_in;
 			switch (data->reg_num) {