diff --git a/drivers/mfd/fsl-imx25-tsadc.c b/drivers/mfd/fsl-imx25-tsadc.c
index ac430a396a89945b0cad1542db8a11b68b497fa5..190e375dc57a55abf124289f1c2d87fd4d1346fb 100644
--- a/drivers/mfd/fsl-imx25-tsadc.c
+++ b/drivers/mfd/fsl-imx25-tsadc.c
@@ -59,7 +59,7 @@ static int mx25_tsadc_domain_map(struct irq_domain *d, unsigned int irq,
 	return 0;
 }
 
-static struct irq_domain_ops mx25_tsadc_domain_ops = {
+static const struct irq_domain_ops mx25_tsadc_domain_ops = {
 	.map = mx25_tsadc_domain_map,
 	.xlate = irq_domain_xlate_onecell,
 };