[PATCH] libertas: use standard kernel macros

Cleanup drivers/net/wireless/libertas/debugfs.c to use standard kernel
macros and functions.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 37 deletions

diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 3ad1e0339ed0..51dfd202f558 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -1772,8 +1772,8 @@ void libertas_debugfs_remove_one(wlan_private *priv)
 
 /* debug entry */
 
-#define item_size(n) (sizeof ((wlan_adapter *)0)->n)
-#define item_addr(n) ((u32) &((wlan_adapter *)0)->n)
+#define item_size(n)    (FIELD_SIZEOF(wlan_adapter, n))
+#define item_addr(n)    (offsetof(wlan_adapter, n))
 
 struct debug_data {
         char name[32];
@@ -1789,40 +1789,7 @@ static struct debug_data items[] = {
         {"psstate", item_size(psstate), item_addr(psstate)},
 };
 
-static int num_of_items = sizeof(items) / sizeof(items[0]);
-
-/**
- *  @brief convert string to number
- *
- *  @param s       pointer to numbered string
- *  @return        converted number from string s
- */
-static int string_to_number(char *s)
-{
-        int r = 0;
-        int base = 0;
-
-        if ((strncmp(s, "0x", 2) == 0) || (strncmp(s, "0X", 2) == 0))
-                base = 16;
-        else
-                base = 10;
-
-        if (base == 16)
-                s += 2;
-
-        for (s = s; *s != 0; s++) {
-                if ((*s >= 48) && (*s <= 57))
-                        r = (r * base) + (*s - 48);
-                else if ((*s >= 65) && (*s <= 70))
-                        r = (r * base) + (*s - 55);
-                else if ((*s >= 97) && (*s <= 102))
-                        r = (r * base) + (*s - 87);
-                else
-                        break;
-        }
-
-        return r;
-}
+static int num_of_items = ARRAY_SIZE(items);
 
 /**
  *  @brief proc read function
@@ -1912,7 +1879,7 @@ static int wlan_debugfs_write(struct file *f, const char __user *buf,
                         if (!p2)
                                 break;
                         p2++;
-                        r = string_to_number(p2);
+                        r = simple_strtoul(p2, NULL, 0);
                         if (d[i].size == 1)
                                 *((u8 *) d[i].addr) = (u8) r;
                         else if (d[i].size == 2)