[PATCH] use printk_ratelimit() inside DRM_DEBUG

[Glauber de Oliveira Costa]

the DRM_DEBUG macro can be called within functions very oftenly
triggered, thus generating lots of message load and potentially
compromising system

Signed-off-by: Glauber de Oliveira Costa <gcosta@xxxxxxxxxx>

-- 
Glauber de Oliveira Costa
Red Hat Inc.
"Free as in Freedom"
--- linux-2.6.18.x86_64/drivers/char/drm/drmP.h.orig	2006-11-01 08:00:18.000000000 -0500
+++ linux-2.6.18.x86_64/drivers/char/drm/drmP.h	2006-11-01 08:06:27.000000000 -0500
@@ -185,7 +185,7 @@
 #if DRM_DEBUG_CODE
 #define DRM_DEBUG(fmt, arg...)						\
 	do {								\
-		if ( drm_debug )			\
+		if ( drm_debug && printk_ratelimit() )			\
 			printk(KERN_DEBUG				\
 			       "[" DRM_NAME ":%s] " fmt ,	\
 			       __FUNCTION__ , ##arg);			\