4 files changed, 9 insertions, 5 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index dee4b12b0342..d824938d05c9 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -75,6 +75,10 @@ static void __ata_qc_complete(struct ata_queued_cmd *qc);
 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");
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 346eb36b1e31..55823765425c 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -1470,10 +1470,10 @@ ata_scsi_find_dev(struct ata_port *ap, struct scsi_device *scsidev)
         if (unlikely(!ata_dev_present(dev)))
                 return NULL;
 
-#ifndef ATA_ENABLE_ATAPI
-        if (unlikely(dev->class == ATA_DEV_ATAPI))
-                return NULL;
-#endif
+        if (atapi_enabled) {
+                if (unlikely(dev->class == ATA_DEV_ATAPI))
+                        return NULL;
+        }
 
         return dev;
 }
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index 809c634afbcd..d608b3a0f6fe 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -38,6 +38,7 @@ struct ata_scsi_args {
 };
 
 /* libata-core.c */
+extern int atapi_enabled;
 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
                                       struct ata_device *dev);
 extern void ata_qc_free(struct ata_queued_cmd *qc);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index fc05a9899288..1eaba4077e15 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -40,7 +40,6 @@
 #undef ATA_VERBOSE_DEBUG        /* yet more debugging output */
 #undef ATA_IRQ_TRAP             /* define to ack screaming irqs */
 #undef ATA_NDEBUG               /* define to disable quick runtime checks */
-#undef ATA_ENABLE_ATAPI         /* define to enable ATAPI support */
 #undef ATA_ENABLE_PATA          /* define to enable PATA support in some
                                  * low-level drivers */
 #undef ATAPI_ENABLE_DMADIR      /* enables ATAPI DMADIR bridge support */