On Tue, Oct 27, 2009 at 5:17 PM, Giuliano Pochini <pochini@xxxxxxxx> wrote: > I'm adding suspend/resume support to echoaudio drivers. I was > reading /Documentation/power/pci.txt: > > " > pci_set_power_state(PCI_D0); > pci_restore_state(); > /* device's irq possibly is changed, driver should take care */ > " > > The card does not support D[0-3] states. The driver suspends the card by > turning the DSP off, without changing the PCI state. Can IRQ, memory mapped > regions, whatever, change on resume ? > Are pci_save_state() and pci_enable_wake() useful/required in this case ? I don't think an audio card would have need for pci_enable_wake, but pci_save_state and pci_restore_state are mandatory, otherwise PCI configuration space won't get restored after resume. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
