diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 61cbd47..7d7bc5e 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -277,7 +277,7 @@
 	if (!end)
 		end = buf + count - 1;
 
-	size = min(IW_ESSID_MAX_SIZE, end - hold);
+	size = min((size_t)IW_ESSID_MAX_SIZE, (size_t) (end - hold));
 	strncpy(scan_cfg->specificSSID, hold, size);
 
 	return;
@@ -1779,7 +1779,7 @@
 struct debug_data {
 	char name[32];
 	u32 size;
-	u32 addr;
+	size_t addr;
 };
 
 /* To debug any member of wlan_adapter, simply add one line here.
@@ -1826,6 +1826,8 @@
 			val = *((u16 *) d[i].addr);
 		else if (d[i].size == 4)
 			val = *((u32 *) d[i].addr);
+		else if (d[i].size == 8)
+			val = *((u64 *) d[i].addr);
 
 		pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
 	}
@@ -1845,7 +1847,7 @@
  *  @param data    data to write
  *  @return 	   number of data
  */
-static int wlan_debugfs_write(struct file *f, const char __user *buf,
+static ssize_t wlan_debugfs_write(struct file *f, const char __user *buf,
 			    size_t cnt, loff_t *ppos)
 {
 	int r, i;
@@ -1887,12 +1889,14 @@
 				*((u16 *) d[i].addr) = (u16) r;
 			else if (d[i].size == 4)
 				*((u32 *) d[i].addr) = (u32) r;
+			else if (d[i].size == 8)
+				*((u64 *) d[i].addr) = (u64) r;
 			break;
 		} while (1);
 	}
 	kfree(pdata);
 
-	return cnt;
+	return (ssize_t)cnt;
 }
 
 static struct file_operations libertas_debug_fops = {
@@ -1917,7 +1921,7 @@
 		return;
 
 	for (i = 0; i < num_of_items; i++)
-		items[i].addr += (u32) priv->adapter;
+		items[i].addr += (size_t) priv->adapter;
 
 	priv->debugfs_debug = debugfs_create_file("debug", 0644,
 						  priv->debugfs_dir, &items[0],