diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index dee4b12..d824938 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -75,6 +75,10 @@
 static unsigned int ata_unique_id = 1;
 static struct workqueue_struct *ata_wq;
 
+int atapi_enabled = 0;
+module_param(atapi_enabled, int, 0444);
+MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
+
 MODULE_AUTHOR("Jeff Garzik");
 MODULE_DESCRIPTION("Library module for ATA devices");
 MODULE_LICENSE("GPL");