[PATCH v5 5/7] ptp: ptp_vmclock: add 'VMCLOCK' to ACPI device match

Chalios, Babis
2026-01-07T13:26:15Z

As we finalised the spec, we spotted that vmgenid actually says that the
_HID is supposed to be hypervisor-specific. Although in the 13 years
since the original vmgenid doc was published, nobody seems to have cared
about using _HID to distinguish between implementations on different
hypervisors, and we only ever use the _CID.

For consistency, match the _CID of "VMCLOCK" too.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Babis Chalios <bchalios@amazon.es>
---
drivers/ptp/ptp_vmclock.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/ptp/ptp_vmclock.c b/drivers/ptp/ptp_vmclock.c
index 801e14cc4799..80fc7c9e062e 100644
--- a/drivers/ptp/ptp_vmclock.c
+++ b/drivers/ptp/ptp_vmclock.c
@@ -751,6 +751,7 @@ static int vmclock_probe(struct platform_device *pdev)

static const struct acpi_device_id vmclock_acpi_ids[] = {
{ "AMZNC10C", 0 },
+ { "VMCLOCK", 0 },
{}
};
MODULE_DEVICE_TABLE(acpi, vmclock_acpi_ids);
--
2.34.1