1 files changed, 0 insertions, 131 deletions
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
deleted file mode 100644
index 87b5c532abf1..000000000000
--- a/arch/s390/kernel/s390_ext.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- *    Copyright IBM Corp. 1999,2010
- *    Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
- *		 Martin Schwidefsky <schwidefsky@de.ibm.com>,
- */
-
-#include <linux/kernel_stat.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/ftrace.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <asm/s390_ext.h>
-#include <asm/irq_regs.h>
-#include <asm/cputime.h>
-#include <asm/lowcore.h>
-#include <asm/irq.h>
-#include "entry.h"
-
-struct ext_int_info {
-	struct ext_int_info *next;
-	ext_int_handler_t handler;
-	__u16 code;
-};
-
-/*
- * ext_int_hash[index] is the start of the list for all external interrupts
- * that hash to this index. With the current set of external interrupts 
- * (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
- * iucv and 0x2603 pfault) this is always the first element. 
- */
-static struct ext_int_info *ext_int_hash[256];
-
-static inline int ext_hash(__u16 code)
-{
-	return (code + (code >> 9)) & 0xff;
-}
-
-int register_external_interrupt(__u16 code, ext_int_handler_t handler)
-{
-	struct ext_int_info *p;
-	int index;
-
-	p = kmalloc(sizeof(*p), GFP_ATOMIC);
-	if (!p)
-		return -ENOMEM;
-	p->code = code;
-	p->handler = handler;
-	index = ext_hash(code);
-	p->next = ext_int_hash[index];
-	ext_int_hash[index] = p;
-	return 0;
-}
-EXPORT_SYMBOL(register_external_interrupt);
-
-int unregister_external_interrupt(__u16 code, ext_int_handler_t handler)
-{
-	struct ext_int_info *p, *q;
-	int index;
-
-	index = ext_hash(code);
-	q = NULL;
-	p = ext_int_hash[index];
-	while (p) {
-		if (p->code == code && p->handler == handler)
-			break;
-		q = p;
-		p = p->next;
-	}
-	if (!p)
-		return -ENOENT;
-	if (q)
-		q->next = p->next;
-	else
-		ext_int_hash[index] = p->next;
-	kfree(p);
-	return 0;
-}
-EXPORT_SYMBOL(unregister_external_interrupt);
-
-void __irq_entry do_extint(struct pt_regs *regs, unsigned int ext_int_code,
-			   unsigned int param32, unsigned long param64)
-{
-	struct pt_regs *old_regs;
-	unsigned short code;
-	struct ext_int_info *p;
-	int index;
-
-	code = (unsigned short) ext_int_code;
-	old_regs = set_irq_regs(regs);
-	s390_idle_check(regs, S390_lowcore.int_clock,
-			S390_lowcore.async_enter_timer);
-	irq_enter();
-	if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
-		/* Serve timer interrupts first. */
-		clock_comparator_work();
-	kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
-	if (code != 0x1004)
-		__get_cpu_var(s390_idle).nohz_delay = 1;
-	index = ext_hash(code);
-	for (p = ext_int_hash[index]; p; p = p->next) {
-		if (likely(p->code == code))
-			p->handler(ext_int_code, param32, param64);
-	}
-	irq_exit();
-	set_irq_regs(old_regs);
-}
-
-static DEFINE_SPINLOCK(sc_irq_lock);
-static int sc_irq_refcount;
-
-void service_subclass_irq_register(void)
-{
-	spin_lock(&sc_irq_lock);
-	if (!sc_irq_refcount)
-		ctl_set_bit(0, 9);
-	sc_irq_refcount++;
-	spin_unlock(&sc_irq_lock);
-}
-EXPORT_SYMBOL(service_subclass_irq_register);
-
-void service_subclass_irq_unregister(void)
-{
-	spin_lock(&sc_irq_lock);
-	sc_irq_refcount--;
-	if (!sc_irq_refcount)
-		ctl_clear_bit(0, 9);
-	spin_unlock(&sc_irq_lock);
-}
-EXPORT_SYMBOL(service_subclass_irq_unregister);