Hi! > [Sorry, it is more useful to define the function so that it takes a second > argument indicating whether to enable or disable wake-up.] > --- > From: Rafael J. Wysocki <rjw@xxxxxxx> > > PCI PM: Introduce function pci_wake_from_d3 (rev. 2) > > Many device drivers use the following sequence of statements to > enable the device to wake up the system while being in the D3_hot > or D3_cold low power state: > > pci_enable_wake(pdev, PCI_D3hot, 1); > pci_enable_wake(pdev, PCI_D3cold, 1); > > However, the second call is not necessary if the first one succeeds > (the ordering of the statements above doesn't matter here) and it > may even be harmful, because we are not supposed to enable PME# > after the wake-up power has been enabled for the device. > > To allow drivers to overcome this problem, introduce function > pci_wake_from_d3() that will enable the device to wake up the system > from any of D3_hot and D3_cold as long as the wake-up from at least > one of them is supported. > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> ACK. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
