On 2/24/2023 1:28 PM, Nirmal Patel wrote: > VMD driver can disable or enable MSI remapping by changing > VMCONFIG_MSI_REMAP register. This register needs to be set to the > default value during soft reboots. Drives failed to enumerate > when Windows boots after performing a soft reboot from Linux. > Windows doesn't support MSI remapping disable feature and stale > register value hinders Windows VMD driver initialization process. > Adding vmd_shutdown function to make sure to set the VMCONFIG > register to the default value. > > Signed-off-by: Nirmal Patel <nirmal.patel@xxxxxxxxxxxxxxx> > Fixes: ee81ee84f873 ("PCI: vmd: Disable MSI-X remapping when possible") > --- > drivers/pci/controller/vmd.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c > index 769eedeb8802..50a187a29a1d 100644 > --- a/drivers/pci/controller/vmd.c > +++ b/drivers/pci/controller/vmd.c > @@ -979,6 +979,13 @@ static void vmd_remove(struct pci_dev *dev) > ida_simple_remove(&vmd_instance_ida, vmd->instance); > } > > +static void vmd_shutdown(struct pci_dev *dev) > +{ > + struct vmd_dev *vmd = pci_get_drvdata(dev); > + > + vmd_remove_irq_domain(vmd); > +} > + > #ifdef CONFIG_PM_SLEEP > static int vmd_suspend(struct device *dev) > { > @@ -1056,6 +1063,7 @@ static struct pci_driver vmd_drv = { > .id_table = vmd_ids, > .probe = vmd_probe, > .remove = vmd_remove, > + .shutdown = vmd_shutdown, > .driver = { > .pm = &vmd_dev_pm_ops, > }, Gentle ping. Thanks