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devices: acpi: Add UID to devices with common HID

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Some OS might check for duplicates and bail out, if it can't create a
distinct mapping. According to ACPI 5.0 section 6.1.12, while _UID is
optional, it becomes required when there are multiple devices with the
same _HID.

Signed-off-by: Anatol Belski <ab@php.net>
This commit is contained in:
Anatol Belski 2020-08-13 23:18:17 +02:00 committed by Sebastien Boeuf
parent ebe61de0d1
commit eba42c392f
3 changed files with 3 additions and 0 deletions
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1
vmm/src/cpu.rs
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@ -1254,6 +1254,7 @@ impl Aml for CpuManager {
"_SB_.PRES".into(),
vec![
&aml::Name::new("_HID".into(), &aml::EISAName::new("PNP0A06")),
&aml::Name::new("_UID".into(), &"CPU Hotplug Controller"),
// Mutex to protect concurrent access as we write to choose CPU and then read back status
&aml::Mutex::new("CPLK".into(), 0),
// I/O port for CPU controller

1
vmm/src/device_manager.rs
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@ -3438,6 +3438,7 @@ impl Aml for DeviceManager {
vec![
&aml::Name::new("_HID".into(), &aml::EISAName::new("PNP0A06")),
&aml::Name::new("_STA".into(), &0x0bu8),
&aml::Name::new("_UID".into(), &"PCI Hotplug Controller"),
&aml::Mutex::new("BLCK".into(), 0),
// I/O port for PCI hotplug controller
&aml::Name::new(

1
vmm/src/memory_manager.rs
View File

@ -1225,6 +1225,7 @@ impl Aml for MemoryManager {
"_SB_.MHPC".into(),
vec![
&aml::Name::new("_HID".into(), &aml::EISAName::new("PNP0A06")),
&aml::Name::new("_UID".into(), &"Memory Hotplug Controller"),
// Mutex to protect concurrent access as we write to choose slot and then read back status
&aml::Mutex::new("MLCK".into(), 0),
// I/O port for memory controller