https://bugzilla.kernel.org/show_bug.cgi?id=43228
--- Comment #14 from Peter <lekenst...@gmail.com> 2012-05-16 22:43:53 ---
I wish I could say yes, but it fails with:
ACPI: Device [PEGP] failed to transition to D4
Looking at your changes, it became clear that code in __acpi_bus_set_power is
wrongly placed. It should be placed in the statement following the "state <
device->power.state" condition, not the else-statement after. Otherwise, it
causes the function to call _PS4 (fails).
Now this fixes it at boot, but on suspend/resume I get the error again if
bbswitch tries to put the device back in D3 state. bbswitch:
1. Before suspend, it turns the card back on: bbswitch_on().
2. bbswitch_on() calls pci_set_power_state(dis_dev, PCI_D0); somewhere
3. After resume, it turns the card back off if necessary: bbswitch_off().
4. bbswitch_off() calls pci_set_power_state(dis_dev, PCI_D3hot);
Before the D3 changes, I had no issues with suspend/resume. Perhaps there are
more places where ACPI_STATE_D3 (4) should become .._HOT (3)? Do you want be to
test the suspend/resume process while setting object_name[3] = '3' earlier
(i.e. right before the if/else as in my last patch)?
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