* Default "suspend" method for devices that have no driver provided suspend,
* or not even a driver at all (second part).
*/
-static void pci_default_pm_suspend_late(struct pci_dev *pci_dev)
+static void pci_pm_set_unknown_state(struct pci_dev *pci_dev)
{
/*
* mark its power state as "unknown", since we don't know if
* Default "resume" method for devices that have no driver provided resume,
* or not even a driver at all (second part).
*/
-static int pci_default_pm_resume_late(struct pci_dev *pci_dev)
+static int pci_pm_reenable_device(struct pci_dev *pci_dev)
{
int retval;
* This is for compatibility with existing code with legacy PM
* support.
*/
- pci_default_pm_suspend_late(pci_dev);
+ pci_pm_set_unknown_state(pci_dev);
}
+
+ pci_fixup_device(pci_fixup_suspend, pci_dev);
+
return i;
}
return i;
}
+static int pci_legacy_resume_early(struct device *dev)
+{
+ int error = 0;
+ struct pci_dev * pci_dev = to_pci_dev(dev);
+ struct pci_driver * drv = pci_dev->driver;
+
+ pci_fixup_device(pci_fixup_resume_early, pci_dev);
+
+ if (drv && drv->resume_early)
+ error = drv->resume_early(pci_dev);
+ return error;
+}
+
static int pci_legacy_resume(struct device *dev)
{
int error;
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
+ pci_fixup_device(pci_fixup_resume, pci_dev);
+
if (drv && drv->resume) {
error = drv->resume(pci_dev);
} else {
/* restore the PCI config space */
pci_restore_state(pci_dev);
- error = pci_default_pm_resume_late(pci_dev);
+ error = pci_pm_reenable_device(pci_dev);
}
return error;
}
-static int pci_legacy_resume_early(struct device *dev)
-{
- int error = 0;
- struct pci_dev * pci_dev = to_pci_dev(dev);
- struct pci_driver * drv = pci_dev->driver;
-
- if (drv && drv->resume_early)
- error = drv->resume_early(pci_dev);
- return error;
-}
-
/* Auxiliary functions used by the new power management framework */
static int pci_restore_standard_config(struct pci_dev *pci_dev)
if (!pci_is_bridge(pci_dev))
pci_enable_wake(pci_dev, PCI_D0, false);
- return pci_default_pm_resume_late(pci_dev);
+ return pci_pm_reenable_device(pci_dev);
}
static void pci_pm_default_suspend_generic(struct pci_dev *pci_dev)
if (!pci_is_bridge(pci_dev))
pci_prepare_to_sleep(pci_dev);
+
+ pci_fixup_device(pci_fixup_suspend, pci_dev);
}
static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev)
{
struct pci_driver *drv = pci_dev->driver;
-
- return drv && (drv->suspend || drv->suspend_late || drv->resume
+ bool ret = drv && (drv->suspend || drv->suspend_late || drv->resume
|| drv->resume_early);
+
+ /*
+ * Legacy PM support is used by default, so warn if the new framework is
+ * supported as well. Drivers are supposed to support either the
+ * former, or the latter, but not both at the same time.
+ */
+ WARN_ON(ret && drv->driver.pm);
+
+ return ret;
}
/* New power management framework */
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->suspend) {
- error = drv->pm->suspend(dev);
- suspend_report_result(drv->pm->suspend, error);
- }
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- error = pci_legacy_suspend(dev, PMSG_SUSPEND);
- } else {
- pci_pm_default_suspend(pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_suspend(dev, PMSG_SUSPEND);
+
+ if (drv && drv->pm && drv->pm->suspend) {
+ error = drv->pm->suspend(dev);
+ suspend_report_result(drv->pm->suspend, error);
}
- pci_fixup_device(pci_fixup_suspend, pci_dev);
+ if (!error)
+ pci_pm_default_suspend(pci_dev);
return error;
}
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->suspend_noirq) {
- error = drv->pm->suspend_noirq(dev);
- suspend_report_result(drv->pm->suspend_noirq, error);
- }
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- error = pci_legacy_suspend_late(dev, PMSG_SUSPEND);
- } else {
- pci_default_pm_suspend_late(pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_suspend_late(dev, PMSG_SUSPEND);
+
+ if (drv && drv->pm && drv->pm->suspend_noirq) {
+ error = drv->pm->suspend_noirq(dev);
+ suspend_report_result(drv->pm->suspend_noirq, error);
}
+ if (!error)
+ pci_pm_set_unknown_state(pci_dev);
+
return error;
}
-static int pci_pm_resume(struct device *dev)
+static int pci_pm_resume_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- pci_fixup_device(pci_fixup_resume, pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume_early(dev);
- if (drv->pm->resume)
- error = drv->pm->resume(dev);
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- pci_fixup_device(pci_fixup_resume, pci_dev);
- error = pci_legacy_resume(dev);
- } else {
- error = pci_pm_default_resume(pci_dev);
- }
+ pci_pm_default_resume_noirq(pci_dev);
+
+ if (drv && drv->pm && drv->pm->resume_noirq)
+ error = drv->pm->resume_noirq(dev);
return error;
}
-static int pci_pm_resume_noirq(struct device *dev)
+static int pci_pm_resume(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- pci_fixup_device(pci_fixup_resume_early, pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume(dev);
- if (drv->pm->resume_noirq)
- error = drv->pm->resume_noirq(dev);
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- pci_fixup_device(pci_fixup_resume_early, pci_dev);
- error = pci_legacy_resume_early(dev);
- } else {
- pci_pm_default_resume_noirq(pci_dev);
- }
+ error = pci_pm_default_resume(pci_dev);
+
+ if (!error && drv && drv->pm && drv->pm->resume)
+ error = drv->pm->resume(dev);
return error;
}
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->freeze) {
- error = drv->pm->freeze(dev);
- suspend_report_result(drv->pm->freeze, error);
- }
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- error = pci_legacy_suspend(dev, PMSG_FREEZE);
- pci_fixup_device(pci_fixup_suspend, pci_dev);
- } else {
- pci_pm_default_suspend_generic(pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_suspend(dev, PMSG_FREEZE);
+
+ if (drv && drv->pm && drv->pm->freeze) {
+ error = drv->pm->freeze(dev);
+ suspend_report_result(drv->pm->freeze, error);
}
+ if (!error)
+ pci_pm_default_suspend_generic(pci_dev);
+
return error;
}
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->freeze_noirq) {
- error = drv->pm->freeze_noirq(dev);
- suspend_report_result(drv->pm->freeze_noirq, error);
- }
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- error = pci_legacy_suspend_late(dev, PMSG_FREEZE);
- } else {
- pci_default_pm_suspend_late(pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_suspend_late(dev, PMSG_FREEZE);
+
+ if (drv && drv->pm && drv->pm->freeze_noirq) {
+ error = drv->pm->freeze_noirq(dev);
+ suspend_report_result(drv->pm->freeze_noirq, error);
}
+ if (!error)
+ pci_pm_set_unknown_state(pci_dev);
+
return error;
}
-static int pci_pm_thaw(struct device *dev)
+static int pci_pm_thaw_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->thaw)
- error = drv->pm->thaw(dev);
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- pci_fixup_device(pci_fixup_resume, pci_dev);
- error = pci_legacy_resume(dev);
- } else {
- pci_default_pm_resume_late(pci_dev);
- }
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume_early(dev);
+
+ pci_update_current_state(pci_dev, PCI_D0);
+
+ if (drv && drv->pm && drv->pm->thaw_noirq)
+ error = drv->pm->thaw_noirq(dev);
return error;
}
-static int pci_pm_thaw_noirq(struct device *dev)
+static int pci_pm_thaw(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->thaw_noirq)
- error = drv->pm->thaw_noirq(dev);
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- pci_fixup_device(pci_fixup_resume_early, to_pci_dev(dev));
- error = pci_legacy_resume_early(dev);
- } else {
- pci_update_current_state(pci_dev, PCI_D0);
- }
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume(dev);
+
+ pci_pm_reenable_device(pci_dev);
+
+ if (drv && drv->pm && drv->pm->thaw)
+ error = drv->pm->thaw(dev);
return error;
}
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->poweroff) {
- error = drv->pm->poweroff(dev);
- suspend_report_result(drv->pm->poweroff, error);
- }
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- error = pci_legacy_suspend(dev, PMSG_HIBERNATE);
- } else {
- pci_pm_default_suspend(pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_suspend(dev, PMSG_HIBERNATE);
+
+ if (drv && drv->pm && drv->pm->poweroff) {
+ error = drv->pm->poweroff(dev);
+ suspend_report_result(drv->pm->poweroff, error);
}
- pci_fixup_device(pci_fixup_suspend, pci_dev);
+ if (!error)
+ pci_pm_default_suspend(pci_dev);
return error;
}
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- if (drv->pm->poweroff_noirq) {
- error = drv->pm->poweroff_noirq(dev);
- suspend_report_result(drv->pm->poweroff_noirq, error);
- }
- } else if (pci_has_legacy_pm_support(to_pci_dev(dev))) {
- error = pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
+ if (pci_has_legacy_pm_support(to_pci_dev(dev)))
+ return pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
+
+ if (drv && drv->pm && drv->pm->poweroff_noirq) {
+ error = drv->pm->poweroff_noirq(dev);
+ suspend_report_result(drv->pm->poweroff_noirq, error);
}
return error;
}
-static int pci_pm_restore(struct device *dev)
+static int pci_pm_restore_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- pci_fixup_device(pci_fixup_resume, pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume_early(dev);
- if (drv->pm->restore)
- error = drv->pm->restore(dev);
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- pci_fixup_device(pci_fixup_resume, pci_dev);
- error = pci_legacy_resume(dev);
- } else {
- error = pci_pm_default_resume(pci_dev);
- }
+ pci_pm_default_resume_noirq(pci_dev);
+
+ if (drv && drv->pm && drv->pm->restore_noirq)
+ error = drv->pm->restore_noirq(dev);
return error;
}
-static int pci_pm_restore_noirq(struct device *dev)
+static int pci_pm_restore(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
- if (drv && drv->pm) {
- pci_fixup_device(pci_fixup_resume_early, pci_dev);
+ if (pci_has_legacy_pm_support(pci_dev))
+ return pci_legacy_resume(dev);
- if (drv->pm->restore_noirq)
- error = drv->pm->restore_noirq(dev);
- } else if (pci_has_legacy_pm_support(pci_dev)) {
- pci_fixup_device(pci_fixup_resume_early, pci_dev);
- error = pci_legacy_resume_early(dev);
- } else {
- pci_pm_default_resume_noirq(pci_dev);
- }
+ error = pci_pm_default_resume(pci_dev);
+
+ if (!error && drv && drv->pm && drv->pm->restore)
+ error = drv->pm->restore(dev);
return error;
}