[ALSA] usb-audio - reduce size of unitbitmap array

USB generic driver
Unit/terminal IDs are 8-bit integers, so the unitbitmap
variable does not need to be bigger than 256 bits.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 6ad154aaba1b..e601f4ba5f2c 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -67,7 +67,7 @@ struct usb_mixer_build {
         unsigned int ctrlif;
         unsigned short vendor;
         unsigned short product;
-        DECLARE_BITMAP(unitbitmap, 32*32);
+        DECLARE_BITMAP(unitbitmap, 256);
         usb_audio_term_t oterm;
         const struct usbmix_name_map *map;
         const struct usbmix_selector_map *selector_map;