diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c
index 05a7cbfd63ec..3e606171d1dd 100644
--- a/drivers/hwtracing/coresight/coresight-tmc.c
+++ b/drivers/hwtracing/coresight/coresight-tmc.c
@@ -304,7 +304,7 @@ static ssize_t trigger_cntr_show(struct device *dev,
 	struct tmc_drvdata *drvdata = dev_get_drvdata(dev->parent);
 	unsigned long val = drvdata->trigger_cntr;
 
-	return sprintf(buf, "%#lx\n", val);
+	return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
 }
 
 static ssize_t trigger_cntr_store(struct device *dev,
@@ -329,7 +329,7 @@ static ssize_t buffer_size_show(struct device *dev,
 {
 	struct tmc_drvdata *drvdata = dev_get_drvdata(dev->parent);
 
-	return sprintf(buf, "%#x\n", drvdata->size);
+	return scnprintf(buf, PAGE_SIZE, "%#x\n", drvdata->size);
 }
 
 static ssize_t buffer_size_store(struct device *dev,