diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 3c76696..21fd515 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -1945,6 +1945,7 @@
 	dd->flags |= dd->pdata->flags;
 
 	pm_runtime_enable(dev);
+	pm_runtime_irq_safe(dev);
 	pm_runtime_get_sync(dev);
 	rev = omap_sham_read(dd, SHA_REG_REV(dd));
 	pm_runtime_put_sync(&pdev->dev);