diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-11-05 11:27:49 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-11-20 17:35:41 -0600 |
| commit | adfac8f6b7396b408fa9a8f40ea41112bebb980f (patch) | |
| tree | 2056a54f284f66e543265813c8d2c83461206b5d /drivers | |
| parent | 81cfa5908fd6fe610b7c47b742fe30d6d897ba0f (diff) | |
| download | linux-adfac8f6b7396b408fa9a8f40ea41112bebb980f.tar.bz2 | |
PCI/PM: Use pci_power_up() in pci_set_power_state()
Make it explicitly clear that the code to put devices into D0 in
pci_set_power_state() and in pci_pm_default_resume_early() is the
same by making the latter use pci_power_up() for transitions into D0.
Code rearrangement, no intentional functional impact.
Link: https://lore.kernel.org/r/2520019.OZ1nXS5aSj@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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pci.c | 25 | ||||
| -rw-r--r-- | drivers/pci/pci.h | 2 |
2 files changed, 14 insertions, 13 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 11b4d9274d96..9f0977d0ac5a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1033,6 +1033,16 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state) } /** + * pci_power_up - Put the given device into D0 + * @dev: PCI device to power up + */ +int pci_power_up(struct pci_dev *dev) +{ + __pci_start_power_transition(dev, PCI_D0); + return pci_raw_set_power_state(dev, PCI_D0); +} + +/** * __pci_dev_set_current_state - Set current state of a PCI device * @dev: Device to handle * @data: pointer to state to be set @@ -1117,6 +1127,9 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) if (dev->current_state == state) return 0; + if (state == PCI_D0) + return pci_power_up(dev); + /* * This device is quirked not to be put into D3, so don't put it in * D3 @@ -1124,8 +1137,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) if (state >= PCI_D3hot && (dev->dev_flags & PCI_DEV_FLAGS_NO_D3)) return 0; - __pci_start_power_transition(dev, state); - /* * To put device in D3cold, we put device into D3hot in native * way, then put device into D3cold with platform ops @@ -1141,16 +1152,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) EXPORT_SYMBOL(pci_set_power_state); /** - * pci_power_up - Put the given device into D0 forcibly - * @dev: PCI device to power up - */ -void pci_power_up(struct pci_dev *dev) -{ - __pci_start_power_transition(dev, PCI_D0); - pci_raw_set_power_state(dev, PCI_D0); -} - -/** * pci_choose_state - Choose the power state of a PCI device * @dev: PCI device to be suspended * @state: target sleep state for the whole system. This is the value diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 3f6947ee3324..7c68312c72f4 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -85,7 +85,7 @@ struct pci_platform_pm_ops { int pci_set_platform_pm(const struct pci_platform_pm_ops *ops); void pci_update_current_state(struct pci_dev *dev, pci_power_t state); void pci_refresh_power_state(struct pci_dev *dev); -void pci_power_up(struct pci_dev *dev); +int pci_power_up(struct pci_dev *dev); void pci_disable_enabled_device(struct pci_dev *dev); int pci_finish_runtime_suspend(struct pci_dev *dev); void pcie_clear_root_pme_status(struct pci_dev *dev); |