Merge back earlier 'pm-runtime' material for 3.19-rc1.
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index c84c88b..55bc92c 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -233,6 +233,7 @@
config IA64_HP_SIM
bool "Ski-simulator"
select SWIOTLB
+ depends on !PM_RUNTIME
endchoice
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 67c7938..8f1ab84 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -13,42 +13,39 @@
#include <trace/events/rpm.h>
#include "power.h"
-#define RPM_GET_CALLBACK(dev, cb) \
-({ \
- int (*__rpm_cb)(struct device *__d); \
- \
- if (dev->pm_domain) \
- __rpm_cb = dev->pm_domain->ops.cb; \
- else if (dev->type && dev->type->pm) \
- __rpm_cb = dev->type->pm->cb; \
- else if (dev->class && dev->class->pm) \
- __rpm_cb = dev->class->pm->cb; \
- else if (dev->bus && dev->bus->pm) \
- __rpm_cb = dev->bus->pm->cb; \
- else \
- __rpm_cb = NULL; \
- \
- if (!__rpm_cb && dev->driver && dev->driver->pm) \
- __rpm_cb = dev->driver->pm->cb; \
- \
- __rpm_cb; \
-})
+typedef int (*pm_callback_t)(struct device *);
-static int (*rpm_get_suspend_cb(struct device *dev))(struct device *)
+static pm_callback_t __rpm_get_callback(struct device *dev, size_t cb_offset)
{
- return RPM_GET_CALLBACK(dev, runtime_suspend);
+ pm_callback_t cb;
+ const struct dev_pm_ops *ops;
+
+ if (dev->pm_domain)
+ ops = &dev->pm_domain->ops;
+ else if (dev->type && dev->type->pm)
+ ops = dev->type->pm;
+ else if (dev->class && dev->class->pm)
+ ops = dev->class->pm;
+ else if (dev->bus && dev->bus->pm)
+ ops = dev->bus->pm;
+ else
+ ops = NULL;
+
+ if (ops)
+ cb = *(pm_callback_t *)((void *)ops + cb_offset);
+ else
+ cb = NULL;
+
+ if (!cb && dev->driver && dev->driver->pm)
+ cb = *(pm_callback_t *)((void *)dev->driver->pm + cb_offset);
+
+ return cb;
}
-static int (*rpm_get_resume_cb(struct device *dev))(struct device *)
-{
- return RPM_GET_CALLBACK(dev, runtime_resume);
-}
+#define RPM_GET_CALLBACK(dev, callback) \
+ __rpm_get_callback(dev, offsetof(struct dev_pm_ops, callback))
#ifdef CONFIG_PM_RUNTIME
-static int (*rpm_get_idle_cb(struct device *dev))(struct device *)
-{
- return RPM_GET_CALLBACK(dev, runtime_idle);
-}
static int rpm_resume(struct device *dev, int rpmflags);
static int rpm_suspend(struct device *dev, int rpmflags);
@@ -347,7 +344,7 @@
dev->power.idle_notification = true;
- callback = rpm_get_idle_cb(dev);
+ callback = RPM_GET_CALLBACK(dev, runtime_idle);
if (callback)
retval = __rpm_callback(callback, dev);
@@ -517,7 +514,7 @@
__update_runtime_status(dev, RPM_SUSPENDING);
- callback = rpm_get_suspend_cb(dev);
+ callback = RPM_GET_CALLBACK(dev, runtime_suspend);
retval = rpm_callback(callback, dev);
if (retval)
@@ -737,7 +734,7 @@
__update_runtime_status(dev, RPM_RESUMING);
- callback = rpm_get_resume_cb(dev);
+ callback = RPM_GET_CALLBACK(dev, runtime_resume);
retval = rpm_callback(callback, dev);
if (retval) {
@@ -1431,7 +1428,7 @@
if (pm_runtime_status_suspended(dev))
return 0;
- callback = rpm_get_suspend_cb(dev);
+ callback = RPM_GET_CALLBACK(dev, runtime_suspend);
if (!callback) {
ret = -ENOSYS;
@@ -1467,7 +1464,7 @@
int (*callback)(struct device *);
int ret = 0;
- callback = rpm_get_resume_cb(dev);
+ callback = RPM_GET_CALLBACK(dev, runtime_resume);
if (!callback) {
ret = -ENOSYS;
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index bbef57f..95d712e 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -94,6 +94,7 @@
config PM_SLEEP
def_bool y
depends on SUSPEND || HIBERNATE_CALLBACKS
+ select PM_RUNTIME
config PM_SLEEP_SMP
def_bool y
@@ -131,7 +132,6 @@
config PM_RUNTIME
bool "Run-time PM core functionality"
- depends on !IA64_HP_SIM
---help---
Enable functionality allowing I/O devices to be put into energy-saving
(low power) states at run time (or autosuspended) after a specified