diff --git a/arch/ppc/platforms/pmac_cpufreq.c b/arch/ppc/platforms/pmac_cpufreq.c
index 48e482c8bd0d3b06706d94573180c7be187cad76..937f46df711eeda3dc94db367bb7a0e2e0c7c387 100644
--- a/arch/ppc/platforms/pmac_cpufreq.c
+++ b/arch/ppc/platforms/pmac_cpufreq.c
@@ -271,6 +271,8 @@ static int __pmac pmu_set_cpu_speed(int low_speed)
 #ifdef DEBUG_FREQ
 	printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1));
 #endif
+	pmu_suspend();
+
 	/* Disable all interrupt sources on openpic */
  	pic_prio = openpic_get_priority();
 	openpic_set_priority(0xf);
@@ -345,6 +347,8 @@ static int __pmac pmu_set_cpu_speed(int low_speed)
 	debug_calc_bogomips();
 #endif
 
+	pmu_resume();
+
 	preempt_enable();
 
 	return 0;
diff --git a/arch/ppc/syslib/open_pic.c b/arch/ppc/syslib/open_pic.c
index 9d4ed68b580419c5c7e1e0e02509a58e9e29ca60..000ba47c67cbacd5b1bde36148c2fe0328e9db04 100644
--- a/arch/ppc/syslib/open_pic.c
+++ b/arch/ppc/syslib/open_pic.c
@@ -275,7 +275,7 @@ static void __init openpic_enable_sie(void)
 }
 #endif
 
-#if defined(CONFIG_EPIC_SERIAL_MODE) || defined(CONFIG_PM)
+#if defined(CONFIG_EPIC_SERIAL_MODE)
 static void openpic_reset(void)
 {
 	openpic_setfield(&OpenPIC->Global.Global_Configuration0,
@@ -993,8 +993,6 @@ int openpic_resume(struct sys_device *sysdev)
 		return 0;
 	}
 
-	openpic_reset();
-
 	/* OpenPIC sometimes seem to need some time to be fully back up... */
 	do {
 		openpic_set_spurious(OPENPIC_VEC_SPURIOUS);
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index e654aa5eecd4946aa822b36659a5be8df8ced43f..bb9f4044c74deaf0cae595581e3f6cb574bfbcdf 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -2421,7 +2421,7 @@ pmac_wakeup_devices(void)
 
 	/* Re-enable local CPU interrupts */
 	local_irq_enable();
-	mdelay(100);
+	mdelay(10);
 	preempt_enable();
 
 	/* Re-enable clock spreading on some machines */
@@ -2549,7 +2549,9 @@ powerbook_sleep_Core99(void)
 		return ret;
 	}
 
-	printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1));
+	/* Stop environment and ADB interrupts */
+	pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
+	pmu_wait_complete(&req);
 
 	/* Tell PMU what events will wake us up */
 	pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS,
@@ -2611,8 +2613,6 @@ powerbook_sleep_Core99(void)
 	pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
 	pmu_wait_complete(&req);
 
-	printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1));
-
 	pmac_wakeup_devices();
 
 	return 0;