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PCI/PM: Rename pci_wakeup_bus() to pci_resume_bus()

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A "wakeup" is a signal from a device telling the system that the device or
the whole system should be awakened and made active.  PCI devices are made
active by "resuming" them.

pci_wakeup_bus() is not involved with the wakeup signal; it *resumes*
devices on a bus (possibly in response to a wakeup signal, but that's at a
higher level).

Rename pci_wakeup_bus() to pci_resume_bus() to better reflect what it does.
No functional change intended.

[bhelgaas: commit log, reorder before removal of pci_wakeup_event()]
Link: https://lore.kernel.org/r/20201125090733.77782-2-mika.westerberg@linux.intel.com
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mika Westerberg 2020-11-25 12:07:33 +03:00 committed by Bjorn Helgaas
parent 80a129afb7
commit 99efde6c9b
3 changed files with 7 additions and 12 deletions
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2
drivers/gpu/vga/vga_switcheroo.c
View file

@ -1039,7 +1039,7 @@ static int vga_switcheroo_runtime_resume(struct device *dev)
mutex_lock(&vgasr_mutex);
vga_switcheroo_power_switch(pdev, VGA_SWITCHEROO_ON);
mutex_unlock(&vgasr_mutex);
pci_wakeup_bus(pdev->bus);
pci_resume_bus(pdev->bus);
ret = dev->bus->pm->runtime_resume(dev);
if (ret)
return ret;

15
drivers/pci/pci.c
View file

@ -1174,12 +1174,7 @@ int pci_platform_power_transition(struct pci_dev *dev, pci_power_t state)
}
EXPORT_SYMBOL_GPL(pci_platform_power_transition);
/**
* pci_wakeup - Wake up a PCI device
* @pci_dev: Device to handle.
* @ign: ignored parameter
*/
static int pci_wakeup(struct pci_dev *pci_dev, void *ign)
static int pci_resume_one(struct pci_dev *pci_dev, void *ign)
{
pci_wakeup_event(pci_dev);
pm_request_resume(&pci_dev->dev);
@ -1187,13 +1182,13 @@ static int pci_wakeup(struct pci_dev *pci_dev, void *ign)
}
/**
* pci_wakeup_bus - Walk given bus and wake up devices on it
* pci_resume_bus - Walk given bus and runtime resume devices on it
* @bus: Top bus of the subtree to walk.
*/
void pci_wakeup_bus(struct pci_bus *bus)
void pci_resume_bus(struct pci_bus *bus)
{
if (bus)
pci_walk_bus(bus, pci_wakeup, NULL);
pci_walk_bus(bus, pci_resume_one, NULL);
}
static int pci_dev_wait(struct pci_dev *dev, char *reset_type, int timeout)
@ -1256,7 +1251,7 @@ int pci_power_up(struct pci_dev *dev)
* may be powered on into D0uninitialized state, resume them to
* give them a chance to suspend again
*/
pci_wakeup_bus(dev->subordinate);
pci_resume_bus(dev->subordinate);
}
return pci_raw_set_power_state(dev, PCI_D0);

2
include/linux/pci.h
View file

@ -1271,7 +1271,7 @@ bool pci_dev_run_wake(struct pci_dev *dev);
void pci_d3cold_enable(struct pci_dev *dev);
void pci_d3cold_disable(struct pci_dev *dev);
bool pcie_relaxed_ordering_enabled(struct pci_dev *dev);
void pci_wakeup_bus(struct pci_bus *bus);
void pci_resume_bus(struct pci_bus *bus);
void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state);
/* For use by arch with custom probe code */