diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index d13474c6d18187c616851ca19ab63e96ecbea896..14150767be4441193ec3dda5bf18519a608fc8ff 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3051,7 +3051,7 @@ int sata_down_spd_limit(struct ata_link *link, u32 spd_limit)
 	 */
 	if (spd > 1)
 		mask &= (1 << (spd - 1)) - 1;
-	else
+	else if (link->sata_spd)
 		return -EINVAL;
 
 	/* were we already at the bottom? */