--- zzzz-none-000/linux-2.6.19.2/arch/sparc/kernel/sys_sparc.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/arch/sparc/kernel/sys_sparc.c	2007-01-19 14:42:56.000000000 +0000
@@ -57,7 +57,7 @@
 	if (ARCH_SUN4C_SUN4 && len > 0x20000000)
 		return -ENOMEM;
 	if (!addr)
-		addr = TASK_UNMAPPED_BASE;
+		addr = current->mm->mmap_base;
 
 	if (flags & MAP_SHARED)
 		addr = COLOUR_ALIGN(addr);