diff --git a/drivers/pmdomain/apple/pmp-report.c b/drivers/pmdomain/apple/pmp-report.c
index 8050ade5ef8d08..ee0dd1ff035958 100644
--- a/drivers/pmdomain/apple/pmp-report.c
+++ b/drivers/pmdomain/apple/pmp-report.c
@@ -40,6 +40,7 @@ static int apple_pmp_report_probe(struct platform_device *pdev)
 	if (!rep)
 		return -ENOMEM;
 
+	spin_lock_init(&rep->lock);
 	rep->dev = dev;
 	rep->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(rep->base))