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>

4 files changed, 1 insertions, 7 deletions

diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S
index e0626779fe92..53922748d101 100644
--- a/arch/arm/kernel/sleep.S
+++ b/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)
 
diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
index 51e1583265b2..37178a8559b1 100644
--- a/arch/arm/mach-pxa/pm.c
+++ b/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 */
diff --git a/arch/arm/mach-sa1100/pm.c b/arch/arm/mach-sa1100/pm.c
index c4661aab22fb..d35885ca97a1 100644
--- a/arch/arm/mach-sa1100/pm.c
+++ b/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
          */
diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c
index 5c0a440d6e16..3828191416b5 100644
--- a/arch/arm/plat-samsung/pm.c
+++ b/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();