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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-06-24 02:56:13 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-06-28 02:52:38 +0300
commit8370c2dc4c7b91be7e1231130f0ae08b5aebecf4 (patch)
treeee4c1a4d35ef7ed39107e61a8846f1db2405425f /include/acpi
parent4d183d04195318c8ee8bce048f3f9a89c0e2056d (diff)
downloadlinux-8370c2dc4c7b91be7e1231130f0ae08b5aebecf4.tar.xz
PCI / PM: Drop pme_interrupt flag from struct pci_dev
The pme_interrupt flag in struct pci_dev is set when PMEs generated by the device are going to be signaled via root port PME interrupts. Ironically enough, that information is only used by the code setting up device wakeup through ACPI which returns as soon as it sees the pme_interrupt flag set while setting up "remote runtime wakeup". That is questionable, however, because in theory there may be PCIe devices using out-of-band PME signaling under root ports handled by the native PME code or devices requiring wakeup power setup to be carried out by AML. For such devices, ACPI wakeup should be invoked regardless of whether or not native PME signaling is used in general. For this reason, drop the pme_interrupt flag and rework the code using it which then allows the ACPI-based device wakeup handling in PCI to be consolidated to use one code path for both "runtime remote wakeup" and system wakeup (from sleep states). Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 6bf0f843f7d7..be6b6bb4ef9c 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -602,6 +602,7 @@ void acpi_pm_wakeup_event(struct device *dev);
acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
void (*func)(struct acpi_device_wakeup_context *context));
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
+bool acpi_pm_device_can_wakeup(struct device *dev);
int acpi_pm_device_sleep_state(struct device *, int *, int);
int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
#else
@@ -618,6 +619,10 @@ static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
{
return AE_SUPPORT;
}
+static inline bool acpi_pm_device_can_wakeup(struct device *dev)
+{
+ return false;
+}
static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
{
if (p)