diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 56ce2bb19166935c72503c311b51ad4b98e8f6cd..1807b284326b88f94db762b8bd5d135360d0a16e 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -332,10 +332,8 @@ static int tpm_tis_plat_probe(struct platform_device *pdev)
 	}
 	tpm_info.res = *res;
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (res) {
-		tpm_info.irq = res->start;
-	} else {
+	tpm_info.irq = platform_get_irq(pdev, 0);
+	if (tpm_info.irq <= 0) {
 		if (pdev != force_pdev)
 			tpm_info.irq = -1;
 		else