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[v1,0/2] PCI: PM: Fix handling of device that can only signal PME from D3cold

Message ID 4668274.31r3eYUQgx@kreacher
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Series PCI: PM: Fix handling of device that can only signal PME from D3cold | expand

Message

Rafael J. Wysocki July 29, 2021, 2:46 p.m. UTC 
Hi,

This series is a replacement for the following patch:

https://patchwork.kernel.org/project/linux-pm/patch/3149540.aeNJFYEL58@kreacher/

allowing devices that only can signal PME from D3cold to be put into
low-power states and signal wakeup from D3cold (if they get into it).

However, the patch above works by adding a special case to pci_pme_capable()
which actually is not necessary.

Instead of doing that, it is sufficient to make pci_target_state() handle the
case in which the device cannot signal PME from D0 consistently (patch [1/2]
in this series) and make __pci_enable_wake() enable PM signaling for devices
that can signal PME from D3cold (patch [2/2] in this series).

Please see the patch changelogs for details.

Thanks!