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PCI/PM: Fold __pci_complete_power_transition() into its caller 

Because pci_set_power_state() has become the only caller of
__pci_complete_power_transition(), there is no need for the latter to
be a separate function any more, so fold it into the former, drop a
redundant check and reduce the number of lines of code somewhat.

Code rearrangement, no intentional functional impact.

Link: https://lore.kernel.org/r/15576968.k611qn3UU0@kreacher
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2019-11-05 17:32:08 +01:00 committed by Bjorn Helgaas
parent d6aa37cd04
commit 9c77e63bd8
1 changed files with 7 additions and 23 deletions
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30
drivers/pci/pci.c
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@ -1055,26 +1055,6 @@ void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state)
pci_walk_bus(bus, __pci_dev_set_current_state, &state);
}
/**
* __pci_complete_power_transition - Complete power transition of a PCI device
* @dev: PCI device to handle.
* @state: State to put the device into.
*
* This function should not be called directly by device drivers.
*/
static int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state)
{
int ret;
if (state <= PCI_D0)
return -EINVAL;
ret = pci_platform_power_transition(dev, state);
/* Power off the bridge may power off the whole hierarchy */
if (!ret && state == PCI_D3cold)
pci_bus_set_current_state(dev->subordinate, PCI_D3cold);
return ret;
}
/**
* pci_set_power_state - Set the power state of a PCI device
* @dev: PCI device to handle.
@ -1132,10 +1112,14 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
error = pci_raw_set_power_state(dev, state > PCI_D3hot ?
PCI_D3hot : state);
if (!__pci_complete_power_transition(dev, state))
error = 0;
if (pci_platform_power_transition(dev, state))
return error;
return error;
/* Powering off a bridge may power off the whole hierarchy */
if (state == PCI_D3cold)
pci_bus_set_current_state(dev->subordinate, PCI_D3cold);
return 0;
}
EXPORT_SYMBOL(pci_set_power_state);