ppc64: add autofs ioctl and clean up a prototype

arch/ppc64/kernel/ioctl32.c

@@ -50,6 +50,7 @@
 #include <linux/cdrom.h>
 #include <linux/loop.h>
 #include <linux/auto_fs.h>
+#include <linux/auto_fs4.h>
 #include <linux/devfs_fs.h>
 #include <linux/tty.h>
 #include <linux/vt_kern.h>
@@ -4159,6 +4160,7 @@ COMPATIBLE_IOCTL(AUTOFS_IOC_FAIL),
 COMPATIBLE_IOCTL(AUTOFS_IOC_CATATONIC),
 COMPATIBLE_IOCTL(AUTOFS_IOC_PROTOVER),
 COMPATIBLE_IOCTL(AUTOFS_IOC_EXPIRE),
+COMPATIBLE_IOCTL(AUTOFS_IOC_EXPIRE_MULTI),
 /* DEVFS */
 COMPATIBLE_IOCTL(DEVFSDIOC_GET_PROTO_REV),
 COMPATIBLE_IOCTL(DEVFSDIOC_SET_EVENT_MASK),

arch/ppc64/kernel/open_pic.c

@@ -111,7 +111,6 @@ unsigned int openpic_vec_spurious;
  * data has probably been corrupted and we're going to panic or deadlock later
  * anyway --Troy
  */
-extern unsigned long* _get_SP(void);
 #define check_arg_irq(irq) \
     if (irq < open_pic_irq_offset || irq >= (NumSources+open_pic_irq_offset)){ \
       printk(KERN_ERR "open_pic.c:%d: illegal irq %d\n", __LINE__, irq); \

arch/ppc64/kernel/process.c

@@ -533,8 +533,6 @@ static void show_tsk_stack(struct task_struct *p, unsigned long sp)
 	} while (count++ < 32);
 }
 
-extern unsigned long *_get_SP(void);
-
 void dump_stack(void)
 {
 	show_tsk_stack(current, (unsigned long)_get_SP());

include/asm-ppc64/processor.h

@@ -595,6 +595,8 @@ GLUE(GLUE(.LT,NAME),_procname_end):
 			asm volatile("mfasr %0" : "=r" (rval)); rval;})
 
 #ifndef __ASSEMBLY__
+extern unsigned long *_get_SP(void);
+
 extern int have_of;
 
 struct task_struct;