[PATCH] turn many #if $undefined_string into #ifdef $undefined_string

turn many #if $undefined_string into #ifdef $undefined_string to fix some
warnings after -Wno-def was added to global CFLAGS

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/sound/oss/pss.c b/sound/oss/pss.c
index 3ed3876..a617ccb 100644
--- a/sound/oss/pss.c
+++ b/sound/oss/pss.c
@@ -714,7 +714,7 @@
 	 
 	disable_all_emulations();
 
-#if YOU_REALLY_WANT_TO_ALLOCATE_THESE_RESOURCES
+#ifdef YOU_REALLY_WANT_TO_ALLOCATE_THESE_RESOURCES
 	if (sound_alloc_dma(hw_config->dma, "PSS"))
 	{
 		printk("pss.c: Can't allocate DMA channel.\n");