[17/25] ARM: pm: move cpu_init() call into core code

Commit Message

Russell King - ARM Linux June 22, 2011, 3:14 p.m. UTC

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.

Signed-off-by: Russell King <[e-mail]>
---
 arch/arm/kernel/sleep.S    |    1 +
 arch/arm/mach-pxa/pm.c     |    1 -
 arch/arm/mach-sa1100/pm.c  |    2 --
 arch/arm/plat-samsung/pm.c |    4 ----
 4 files changed, 1 insertions(+), 7 deletions(-)

Patch

diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S
index e062677..5392274 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 51e1583..37178a8 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 7d8f80e..d49eaf2 100644
--- a/arch/arm/mach-sa1100/pm.c
+++ b/arch/arm/mach-sa1100/pm.c
@@ -80,8 +80,6 @@  static int sa11x0_pm_enter(suspend_state_t state)
 	/* Re-enable clock switching */
 	asm volatile("mcr p15, 0, %0, c15, c1, 2" : : "r" (0));
 
-	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 5c0a440..3828191 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();