diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2019-12-13 11:12:33 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2020-01-09 14:22:29 +0000 |
| commit | 5c8ff794a8dcb0760c137d3b2dff1879a4a8dad6 (patch) | |
| tree | 7d889ae1343b1d2a475438ddf8365c8aad8bb621 /src/superio/common | |
| parent | 1aba2a32e890228a817dbc32a92607b336e7ea32 (diff) | |
superio/common/ssdt: Make disabled PNP devices ACPI compliant
Always write a _HID, even for disabled PNP devices.
Fixes a BSOD on Windows 10.
Change-Id: I419a08bd6a3570fb4e1ae31bef4f9ccd6836fe1b
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37692
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Diffstat (limited to 'src/superio/common')
| -rw-r--r-- | src/superio/common/ssdt.c | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/src/superio/common/ssdt.c b/src/superio/common/ssdt.c index bc5d39460a..41cafdfb0e 100644 --- a/src/superio/common/ssdt.c +++ b/src/superio/common/ssdt.c @@ -219,28 +219,11 @@ void superio_common_fill_ssdt_generator(struct device *dev) } acpigen_pop_len(); /* Method */ - if (!dev->enabled) { - acpigen_pop_len(); /* Device */ - acpigen_pop_len(); /* Scope */ - return; - } - - if (has_resources(dev)) { - /* Resources - _CRS */ - acpigen_write_name("_CRS"); - acpigen_write_resourcetemplate_header(); - ldn_gen_resources(dev); - acpigen_write_resourcetemplate_footer(); - - /* Resources - _PRS */ - acpigen_write_name("_PRS"); - acpigen_write_resourcetemplate_header(); - ldn_gen_resources(dev); - acpigen_write_resourcetemplate_footer(); - - /* Resources base and size for 3rd party ACPI code */ - ldn_gen_resources_use(dev); - } + /* + * The ACPI6.2 spec Chapter 6.1.5 requires to set a _HID if no _ADR + * is present. Tests on Windows 10 showed that this is also true for + * disabled (_STA = 0) devices, otherwise it BSODs. + */ hid = acpi_device_hid(dev); if (!hid) { @@ -266,6 +249,23 @@ void superio_common_fill_ssdt_generator(struct device *dev) } acpigen_pop_len(); /* Method */ + if (dev->enabled && has_resources(dev)) { + /* Resources - _CRS */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + ldn_gen_resources(dev); + acpigen_write_resourcetemplate_footer(); + + /* Resources - _PRS */ + acpigen_write_name("_PRS"); + acpigen_write_resourcetemplate_header(); + ldn_gen_resources(dev); + acpigen_write_resourcetemplate_footer(); + + /* Resources base and size for 3rd party ACPI code */ + ldn_gen_resources_use(dev); + } + acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ } |