ARM: pm: move cpu_init() call into core code

As we have core code dealing with CPU suspend/resume, we can
re-initialize the CPUs exception banked registers via that code rather
than having platforms deal with that level of detail.  So, move the
call to cpu_init() out of platform code into core code.
Tested-by: Kevin Hilman <khilman@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/sleep.S

@@ -88,6 +88,7 @@ ENDPROC(cpu_resume_turn_mmu_on)
 cpu_resume_after_mmu:
 	str	r5, [r2, r4, lsl #2]	@ restore old mapping
 	mcr	p15, 0, r0, c1, c0, 0	@ turn on D-cache
+	bl	cpu_init		@ restore the und/abt/irq banked regs
 	ldmfd	sp!, {r4 - r11, pc}
 ENDPROC(cpu_resume_after_mmu)
 

arch/arm/mach-pxa/pm.c

@@ -42,7 +42,6 @@ int pxa_pm_enter(suspend_state_t state)
 
 	/* *** go zzz *** */
 	pxa_cpu_pm_fns->enter(state);
-	cpu_init();
 
 	if (state != PM_SUSPEND_STANDBY && pxa_cpu_pm_fns->restore) {
 		/* after sleeping, validate the checksum */

arch/arm/mach-sa1100/pm.c

@@ -77,8 +77,6 @@ static int sa11x0_pm_enter(suspend_state_t state)
 	/* go zzz */
 	sa1100_cpu_suspend(PLAT_PHYS_OFFSET - PAGE_OFFSET);
 
-	cpu_init();
-
 	/*
 	 * Ensure not to come back here if it wasn't intended
 	 */

arch/arm/plat-samsung/pm.c

@@ -300,10 +300,6 @@ static int s3c_pm_enter(suspend_state_t state)
 
 	s3c_cpu_save(0, PLAT_PHYS_OFFSET - PAGE_OFFSET);
 
-	/* restore the cpu state using the kernel's cpu init code. */
-
-	cpu_init();
-
 	/* restore the system state */
 
 	s3c_pm_restore_core();