2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 23763a1ec570..d31ee557b395 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1973,6 +1973,12 @@ retry:
         if (class == ATA_DEV_ATA) {
                 if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
                         goto err_out;
+                if (ap->host->flags & ATA_HOST_IGNORE_ATA &&
+                                                        ata_id_is_ata(id)) {
+                        ata_dev_dbg(dev,
+                                "host indicates ignore ATA devices, ignored\n");
+                        return -ENOENT;
+                }
         } else {
                 if (ata_id_is_ata(id))
                         goto err_out;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index e926df7b54c9..6e887c742a27 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -247,6 +247,7 @@ enum {
         ATA_HOST_SIMPLEX        = (1 << 0),     /* Host is simplex, one DMA channel per host only */
         ATA_HOST_STARTED        = (1 << 1),     /* Host started */
         ATA_HOST_PARALLEL_SCAN  = (1 << 2),     /* Ports on this host can be scanned in parallel */
+        ATA_HOST_IGNORE_ATA     = (1 << 3),     /* Ignore ATA devices on this host. */
 
         /* bits 24:31 of host->flags are reserved for LLD specific flags */