diff --git a/arch/xtensa/include/asm/platform.h b/arch/xtensa/include/asm/platform.h
index 94f13fa..f2e50fc 100644
--- a/arch/xtensa/include/asm/platform.h
+++ b/arch/xtensa/include/asm/platform.h
@@ -33,7 +33,7 @@ extern void platform_setup (char **);
 extern void platform_idle (void);
 
 /*
- * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
+ * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE_CCOUNT)
  */
 extern void platform_calibrate_ccount (void);
 
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index 94a23f1..e4c25d0 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -21,7 +21,6 @@
 #include <linux/irq.h>
 #include <linux/kdebug.h>
 #include <linux/module.h>
-#include <linux/profile.h>
 #include <linux/sched/mm.h>
 #include <linux/sched/hotplug.h>
 #include <linux/sched/task_stack.h>
@@ -459,12 +458,6 @@ void show_ipi_list(struct seq_file *p, int prec)
 	}
 }
 
-int setup_profiling_timer(unsigned int multiplier)
-{
-	pr_debug("setup_profiling_timer %d\n", multiplier);
-	return 0;
-}
-
 /* TLB flush functions */
 
 struct flush_data {
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index 1c3dfea..09fda6a 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -23,7 +23,6 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/irq.h>
-#include <linux/profile.h>
 #include <linux/delay.h>
 #include <linux/irqdomain.h>
 #include <linux/sched_clock.h>
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 8b95221..8e54625 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -166,8 +166,9 @@ late_initcall(rs_init);
 
 static void iss_console_write(struct console *co, const char *s, unsigned count)
 {
-	if (s && *s != 0)
-		simc_write(1, s, min(count, strlen(s)));
+	count = s ? strnlen(s, count) : 0;
+	if (count)
+		simc_write(1, s, count);
 }
 
 static struct tty_driver* iss_console_device(struct console *c, int *index)