ALSA: bcd2000: Make local data static

Spotted by sparse:
  sound/usb/bcd2000/bcd2000.c:73:1: warning: symbol 'devices_used' was not declared. Should it be static?

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/bcd2000/bcd2000.c b/sound/usb/bcd2000/bcd2000.c
index 820d6ca8c4580582ceb8ff59330cdce5f5ab89ff..d060dddcc52d5d71be56731b647d2d64442c1fc8 100644 (file)
--- a/sound/usb/bcd2000/bcd2000.c
+++ b/sound/usb/bcd2000/bcd2000.c
@@ -70,7 +70,7 @@ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 
 static DEFINE_MUTEX(devices_mutex);
-DECLARE_BITMAP(devices_used, SNDRV_CARDS);
+static DECLARE_BITMAP(devices_used, SNDRV_CARDS);
 static struct usb_driver bcd2000_driver;
 
 #ifdef CONFIG_SND_DEBUG