USB: Extend and neaten dbg macros

Add format/argument validation for #ifndef DEBUG dbg macro
Neaten dbg macro definitions

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 8 deletions

diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 1819396ed501..0a458b861933 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -351,14 +351,11 @@ static inline void usb_serial_debug_data(int debug,
 
 /* Use our own dbg macro */
 #undef dbg
-#define dbg(format, arg...) \
-        do { \
-                if (debug) \
-                        printk(KERN_DEBUG "%s: " format "\n" , __FILE__ , \
-                                ## arg); \
-        } while (0)
-
-
+#define dbg(format, arg...)                                             \
+do {                                                                    \
+        if (debug)                                                      \
+                printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg); \
+} while (0)
 
 #endif /* __LINUX_USB_SERIAL_H */