dm: set DM_TARGET_WILDCARD feature on "error" target

[karo-tx-linux.git] / drivers / md / dm-table.c

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 061152a437300bbfacfbbc6e475c3935df7cecb6..a49e62b8611f2ed11bde45153b158d766534531f 100644 (file)
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -920,6 +920,20 @@ struct target_type *dm_table_get_immutable_target_type(struct dm_table *t)
        return t->immutable_target_type;
 }
 
+struct dm_target *dm_table_get_wildcard_target(struct dm_table *t)
+{
+       struct dm_target *uninitialized_var(ti);
+       unsigned i = 0;
+
+       while (i < dm_table_get_num_targets(t)) {
+               ti = dm_table_get_target(t, i++);
+               if (dm_target_is_wildcard(ti->type))
+                       return ti;
+       }
+
+       return NULL;
+}
+
 bool dm_table_request_based(struct dm_table *t)
 {
        return __table_type_request_based(dm_table_get_type(t));