[PATCH] uml: remove unused variable and function

syscall_index and next_syscall_index turn out not to be used.
Signed-off-by: NJeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/um/include/kern_util.h

@@ -61,7 +61,6 @@ extern int set_signals(int enable);
 extern void force_sigbus(void);
 extern int pid_to_processor_id(int pid);
 extern void deliver_signals(void *t);
-extern int next_syscall_index(int max);
 extern int next_trap_index(int max);
 extern void default_idle(void);
 extern void finish_fork(void);

arch/um/kernel/syscall.c

@@ -149,22 +149,6 @@ long sys_olduname(struct oldold_utsname __user * name)
 	return error;
 }
 
-DEFINE_SPINLOCK(syscall_lock);
-
-static int syscall_index = 0;
-
-int next_syscall_index(int limit)
-{
-	int ret;
-
-	spin_lock(&syscall_lock);
-	ret = syscall_index;
-	if(++syscall_index == limit)
-		syscall_index = 0;
-	spin_unlock(&syscall_lock);
-	return(ret);
-}
-
 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
 {
 	mm_segment_t fs;