[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>

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 6ad154a..e601f4b 100644 (file)
--- 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;