On Mon, Apr 12, 2021 at 4:18 PM Kai-Heng Feng <kai.heng.f...@canonical.com> wrote: > > On Mon, Mar 29, 2021 at 1:23 PM Kai-Heng Feng > <kai.heng.f...@canonical.com> 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.f...@canonical.com> > > A gentle ping...
Ok, I think I found the root cause: https://lore.kernel.org/lkml/20210419090750.1272562-1-kai.heng.f...@canonical.com/ So we can ignore this patch. Kai-Heng > > > --- > > 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 > >
