[PATCH 12/25] ARM: pm: move cpu_init() call into core code

Russell King - ARM Linux
2011-06-23T19:13:05Z

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 <rmk+kernel@arm.linux.org.uk>
---
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(-)

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 c4661aa..d35885c 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 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();
--
1.7.4.4