diff --git a/drivers/acpi/acpi_pnp.c b/drivers/acpi/acpi_pnp.c
index 895c45d8d25a..6703c1fd993a 100644
--- a/drivers/acpi/acpi_pnp.c
+++ b/drivers/acpi/acpi_pnp.c
@@ -301,8 +301,6 @@ static const struct acpi_device_id acpi_pnp_device_ids[] = {
 	{"LTS0001"},		/* LG C1 EXPRESS DUAL (C1-PB11A3) touch screen (actually a FUJ02E6 in disguise) */
 	{"WCI0003"},		/* Rockwell's (PORALiNK) 33600 INT PNP */
 	{"WEC1022"},		/* Winbond CIR port, should not be probed. We should keep track of it to prevent the legacy serial driver from probing it */
-	{"PNPCXXX"},		/* Unknown PnP modems */
-	{"PNPDXXX"},		/* More unknown PnP modems */
 	/* scl200wdt */
 	{"NSC0800"},		/* National Semiconductor PC87307/PC97307 watchdog component */
 	/* mpu401 */