[PATCH] (1/7) chelsio sparse annotations

NULL noise removal, __iomem annotations, use of if_mii() instead of
open-coding it.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/chelsio/common.h

@@ -88,7 +88,7 @@ struct t1_rx_mode {
 
 static inline u8 *t1_get_next_mcaddr(struct t1_rx_mode *rm)
 {
-	u8 *addr = 0;
+	u8 *addr = NULL;
 
 	if (rm->idx++ < rm->dev->mc_count) {
 		addr = rm->list->dmi_addr;
@@ -190,7 +190,7 @@ struct sge;
 struct peespi;
 
 struct adapter {
-	u8 *regs;
+	u8 __iomem *regs;
 	struct pci_dev *pdev;
 	unsigned long registered_device_map;
 	unsigned long open_device_map;

drivers/net/chelsio/cxgb2.c

@@ -824,7 +824,7 @@ static void cxgb_proc_cleanup(struct adapter *adapter,
 static int t1_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
 {
         struct adapter *adapter = dev->priv;
-        struct mii_ioctl_data *data = (struct mii_ioctl_data *)&req->ifr_data;
+        struct mii_ioctl_data *data = if_mii(req);
 
 	switch (cmd) {
         case SIOCGMIIPHY: