diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 6c873dc..9812008 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -103,9 +103,6 @@
 	help
 	Can we use information of configuration file?
 
-config HIGHMEM
-	bool "High memory support"
-
 endmenu
 
 menu "Platform options"
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 9606d2b..4ec1633 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -44,6 +44,8 @@
 #include <asm/setup.h>
 #include <asm/param.h>
 
+#include <platform/hardware.h>
+
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
 struct screen_info screen_info = { 0, 24, 0, 0, 0, 80, 0, 0, 0, 24, 1, 16};
 #endif
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index c7a021d..c44f830 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -30,6 +30,7 @@
 #include <linux/stringify.h>
 #include <linux/kallsyms.h>
 #include <linux/delay.h>
+#include <linux/hardirq.h>
 
 #include <asm/ptrace.h>
 #include <asm/timex.h>
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c
index 33f366b..bdd860d 100644
--- a/arch/xtensa/mm/fault.c
+++ b/arch/xtensa/mm/fault.c
@@ -14,6 +14,7 @@
 
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/hardirq.h>
 #include <asm/mmu_context.h>
 #include <asm/cacheflush.h>
 #include <asm/hardirq.h>
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index efed889..25d46c8 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -140,16 +140,14 @@
 }
 
 
-static void rs_put_char(struct tty_struct *tty, unsigned char ch)
+static int rs_put_char(struct tty_struct *tty, unsigned char ch)
 {
 	char buf[2];
 
-	if (!tty)
-		return;
-
 	buf[0] = ch;
 	buf[1] = '\0';		/* Is this NULL necessary? */
 	__simc (SYS_write, 1, (unsigned long) buf, 1, 0, 0);
+	return 1;
 }
 
 static void rs_flush_chars(struct tty_struct *tty)