sound/core/init.c needs linux/ctype.h for isalnum ... :
--- ./sound/core/init.c.tv 2002-11-12 22:55:18.000000000 -0500 +++ ./sound/core/init.c 2002-11-12 22:59:04.000000000 -0500 @@ -27,6 +27,7 @@ #include <sound/core.h> #include <sound/control.h> #include <sound/info.h> +#include <linux/ctype.h> int snd_cards_count = 0; static unsigned int snd_cards_lock = 0; /* locked for registering/using */
(patch against 2.5.47-bk1)