diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index ef1e3d1..cbfa4df 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -4870,7 +4870,6 @@
 	pci_write_config_dword(tp->pdev, TG3PCI_X_CAPS, val);
 
 	if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) {
-		u32 val;
 
 		/* Chip reset on 5780 will reset MSI enable bit,
 		 * so need to restore it.
@@ -5027,7 +5026,7 @@
 	tw32(GRC_MODE, tp->grc_mode);
 
 	if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A0) {
-		u32 val = tr32(0xc4);
+		val = tr32(0xc4);
 
 		tw32(0xc4, val | (1 << 15));
 	}
@@ -5056,7 +5055,7 @@
 
 	if ((tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) &&
 	    tp->pci_chip_rev_id != CHIPREV_ID_5750_A0) {
-		u32 val = tr32(0x7c00);
+		val = tr32(0x7c00);
 
 		tw32(0x7c00, val | (1 << 25));
 	}
@@ -7991,7 +7990,7 @@
 	buf = data;
 	if (b_offset || odd_len) {
 		buf = kmalloc(len, GFP_KERNEL);
-		if (buf == 0)
+		if (!buf)
 			return -ENOMEM;
 		if (b_offset)
 			memcpy(buf, &start, 4);
@@ -8420,7 +8419,7 @@
 static int tg3_test_nvram(struct tg3 *tp)
 {
 	u32 *buf, csum, magic;
-	int i, j, err = 0, size;
+	int i, j, k, err = 0, size;
 
 	if (tg3_nvram_read_swab(tp, 0, &magic) != 0)
 		return -EIO;
@@ -8474,7 +8473,6 @@
 		u8 data[NVRAM_SELFBOOT_DATA_SIZE];
 	       	u8 parity[NVRAM_SELFBOOT_DATA_SIZE];
 		u8 *buf8 = (u8 *) buf;
-		int j, k;
 
 		/* Separate the parity bits and the data bytes.  */
 		for (i = 0, j = 0, k = 0; i < NVRAM_SELFBOOT_HW_SIZE; i++) {
@@ -10730,7 +10728,6 @@
 		 */
 		if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5700_BX) {
 			u32 pm_reg;
-			u16 pci_cmd;
 
 			tp->tg3_flags |= TG3_FLAG_PCIX_TARGET_HWBUG;
 
@@ -11876,7 +11873,7 @@
 	INIT_WORK(&tp->reset_task, tg3_reset_task);
 
 	tp->regs = ioremap_nocache(tg3reg_base, tg3reg_len);
-	if (tp->regs == 0UL) {
+	if (!tp->regs) {
 		printk(KERN_ERR PFX "Cannot map device registers, "
 		       "aborting.\n");
 		err = -ENOMEM;