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(parent: fa1a25c) | patch
PCI: PM: Fix ordering of operations in pci_back_from_sleep()
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 15 Oct 2021 16:45:59 +0000 (18:45 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Thu, 21 Oct 2021 10:18:13 +0000 (12:18 +0200)
commit6f9f0eef0096caddc3fd92760f818970033f06ea
tree7d0d6bcf35d16b42156746d0d9c6b611a0ff9597tree | snapshot
parentfa1a25c51d02f153b49444aa872bee9da3c13ecfcommit | diff
PCI: PM: Fix ordering of operations in pci_back_from_sleep()

The ordering of operations in pci_back_from_sleep() is incorrect,
because the device may be in D3cold when it runs and pci_enable_wake()
needs to access the device's configuration space which cannot be
done in D3cold.

Fix this by calling pci_set_power_state() to put the device into D0
before calling pci_enable_wake() for it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/pci.c diff | blob | history
Domain: System / Kernel;