[PATCH] alpha pt_regs cleanups: collapse set_irq_regs() in titan_dispatch_irqs()

titan_dispatch_irqs() always gets get_irq_regs() as argument; kill
the argument and collapse set_irq_regs() in body.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/alpha/kernel/err_titan.c

@@ -452,7 +452,7 @@ titan_machine_check(u64 vector, u64 la_ptr)
 		 * machine checks to interrupts
 		 */
 		irqmask = tmchk->c_dirx & TITAN_MCHECK_INTERRUPT_MASK;
-		titan_dispatch_irqs(irqmask, get_irq_regs());
+		titan_dispatch_irqs(irqmask);
 	}	
 
 
@@ -746,7 +746,7 @@ privateer_machine_check(u64 vector, u64 la_ptr)
 	/*
 	 * Dispatch the interrupt(s).
 	 */
-	titan_dispatch_irqs(irqmask, get_irq_regs());
+	titan_dispatch_irqs(irqmask);
 
 	/* 
 	 * Release the logout frame.

arch/alpha/kernel/proto.h

@@ -177,7 +177,7 @@ extern void dik_show_regs(struct pt_regs *regs, unsigned long *r9_15);
 extern void die_if_kernel(char *, struct pt_regs *, long, unsigned long *);
 
 /* sys_titan.c */
-extern void titan_dispatch_irqs(u64, struct pt_regs *);
+extern void titan_dispatch_irqs(u64);
 
 /* ../mm/init.c */
 extern void switch_to_system_map(void);

arch/alpha/kernel/sys_titan.c

@@ -243,9 +243,8 @@ titan_legacy_init_irq(void)
 }
 
 void
-titan_dispatch_irqs(u64 mask, struct pt_regs *regs)
+titan_dispatch_irqs(u64 mask)
 {
-	struct pt_regs *old_regs;
 	unsigned long vector;
 
 	/*
@@ -253,7 +252,6 @@ titan_dispatch_irqs(u64 mask, struct pt_regs *regs)
 	 */
 	mask &= titan_cpu_irq_affinity[smp_processor_id()];
 
-	old_regs = set_irq_regs(regs);
 	/*
 	 * Dispatch all requested interrupts 
 	 */
@@ -267,7 +265,6 @@ titan_dispatch_irqs(u64 mask, struct pt_regs *regs)
 		/* dispatch it */
 		alpha_mv.device_interrupt(vector);
 	}
-	set_irq_regs(old_regs);
 }