On Mon, Mar 29, 2021 at 1:23 PM Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote: > > On some platforms, the root port for Intel XMM7360 WWAN supports D3cold. > When the root port is put to D3cold by system suspend or runtime > suspend, attempt to systems resume or runtime resume will freeze the > laptop for a while, then it automatically shuts down. > > The root cause is unclear for now, as the Intel XMM7360 doesn't have a > driver yet. > > So disable D3cold for XMM7360 as a workaround, until proper device > driver is in place. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=212419 > Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> A gentle ping... > --- > v2: > - Add comment. > > drivers/pci/quirks.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c > index 653660e3ba9e..c48b0b4a4164 100644 > --- a/drivers/pci/quirks.c > +++ b/drivers/pci/quirks.c > @@ -5612,3 +5612,16 @@ static void apex_pci_fixup_class(struct pci_dev *pdev) > } > DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a, > PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class); > + > +/* > + * Device [8086:7360] > + * When it resumes from D3cold, system freeze and shutdown happens. > + * Currently there's no driver for XMM7360, so add it as a PCI quirk. > + * https://bugzilla.kernel.org/show_bug.cgi?id=212419 > + */ > +static void pci_fixup_no_d3cold(struct pci_dev *pdev) > +{ > + pci_info(pdev, "disable D3cold\n"); > + pci_d3cold_disable(pdev); > +} > +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x7360, pci_fixup_no_d3cold); > -- > 2.30.2 >
