PCI/PM: Replace pci_set_power_state() in pci_pm_thaw_noirq()

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Calling pci_set_power_state() to put the given device into D0 in
pci_pm_thaw_noirq() may cause it to restore the device's BARs, which is
redundant before calling pci_restore_state(), so replace it with a direct
pci_power_up() call followed by pci_update_current_state() if it returns a
nonzero value, in analogy with pci_pm_default_resume_early().

Avoid code duplication by introducing a wrapper function to contain the
repeating pattern and calling it in both places.

Link: https://lore.kernel.org/r/3639079.MHq7AAxBmi@kreacher
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Rafael J. Wysocki 2022-05-05 20:18:09 +02:00 • committed by Bjorn Helgaas

parent 3cc2a2b270

commit 0f40ac35e4

1 changed files with 7 additions and 2 deletions

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drivers/pci/pci-driver.c

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