[PATCH] x86_64: Quieten down microcode update driver

Only log data in microcode driver when something is changed Otherwise it
was far too noisy on large systems.

Also remove the printk when it is unloaded.

Cc: tigran@veritas.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/microcode.c

@@ -202,8 +202,6 @@ static inline void mark_microcode_update (int cpu_num, microcode_header_t *mc_he
 	} else if (mc_header->rev == uci->rev) {
 		/* notify the caller of success on this cpu */
 		uci->err = MC_SUCCESS;
-		printk(KERN_ERR "microcode: CPU%d already at revision"
-			" 0x%x (current=0x%x)\n", cpu_num, mc_header->rev, uci->rev);
 		goto out;
 	}
 
@@ -369,7 +367,6 @@ static void do_update_one (void * unused)
 	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
 
 	if (uci->mc == NULL) {
-		printk(KERN_INFO "microcode: No new microcode data for CPU%d\n", cpu_num);
 		return;
 	}
 
@@ -511,7 +508,6 @@ static int __init microcode_init (void)
 static void __exit microcode_exit (void)
 {
 	misc_deregister(&microcode_dev);
-	printk(KERN_INFO "IA-32 Microcode Update Driver v" MICROCODE_VERSION " unregistered\n");
 }
 
 module_init(microcode_init)