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-rw-r--r--include/sound/core.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sound/core.h b/include/sound/core.h
index 6d4cc49584c6..dd28de2343b8 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -14,6 +14,7 @@
#include <linux/pm.h> /* pm_message_t */
#include <linux/stringify.h>
#include <linux/printk.h>
+#include <linux/xarray.h>
/* number of supported soundcards */
#ifdef CONFIG_SND_DYNAMIC_MINORS
@@ -103,6 +104,11 @@ struct snd_card {
size_t user_ctl_alloc_size; // current memory allocation by user controls.
struct list_head controls; /* all controls for this card */
struct list_head ctl_files; /* active control files */
+#ifdef CONFIG_SND_CTL_FAST_LOOKUP
+ struct xarray ctl_numids; /* hash table for numids */
+ struct xarray ctl_hash; /* hash table for ctl id matching */
+ bool ctl_hash_collision; /* ctl_hash collision seen? */
+#endif
struct snd_info_entry *proc_root; /* root for soundcard specific files */
struct proc_dir_entry *proc_root_link; /* number link to real id */