lib/vsprintf: factor out %pN[F] handler as netdev_bits()

Move switch case to the netdev_features_string() and rename it to
netdev_bits().  In the future we can extend it as needed.

Here we replace the fallback of %pN from '%p' with possible flags to
sticter '0x%p' without any flags variation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 16 insertions, 9 deletions

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index b30203b00adf..48ff9c36644d 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1345,11 +1345,22 @@ char *uuid_string(char *buf, char *end, const u8 *addr,
         return string(buf, end, uuid, spec);
 }
 
-static
-char *netdev_feature_string(char *buf, char *end, const void *addr)
+static noinline_for_stack
+char *netdev_bits(char *buf, char *end, const void *addr, const char *fmt)
 {
-        unsigned long long num = *(const netdev_features_t *)addr;
-        int size = sizeof(netdev_features_t);
+        unsigned long long num;
+        int size;
+
+        switch (fmt[1]) {
+        case 'F':
+                num = *(const netdev_features_t *)addr;
+                size = sizeof(netdev_features_t);
+                break;
+        default:
+                num = (unsigned long)addr;
+                size = sizeof(unsigned long);
+                break;
+        }
 
         return special_hex_number(buf, end, num, size);
 }
@@ -1621,11 +1632,7 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
                 break;
 
         case 'N':
-                switch (fmt[1]) {
-                case 'F':
-                        return netdev_feature_string(buf, end, ptr);
-                }
-                break;
+                return netdev_bits(buf, end, ptr, fmt);
         case 'a':
                 return address_val(buf, end, ptr, fmt);
         case 'd':