| Message ID | 20221010150206.142615-1-hdegoede@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | x86/PCI: Disable E820 reserved region clipping for Clevo NL4XLU laptops | expand |
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 2f82480fd430..45ef65d31a40 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -189,6 +189,19 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = { DMI_MATCH(DMI_BOARD_NAME, "X170KM-G"), }, }, + + /* + * Clevo NL4XLU barebones have the same E820 reservation covering + * the entire _CRS 32-bit window issue as the Lenovo *IIL* models. + * See https://bugzilla.kernel.org/show_bug.cgi?id=216565 + */ + { + .callback = set_no_e820, + .ident = "Clevo NL4XLU Barebone", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "NL4XLU"), + }, + }, {} };
Clevo NL4XLU barebones have the same E820 reservation covering the entire _CRS 32-bit window issue as the Lenovo *IIL* and Clevo X170KM-G models, relevant dmesg bits (with pci=no_e820): BIOS-e820: [mem 0x000000005bc50000-0x00000000cfffffff] reserved pci_bus 0000:00: root bus resource [mem 0x6d800000-0xbfffffff window] Note how the e820 reservation covers the entire PCI root mem window. Add a no_e820 quirk for these models to fix the touchpad not working (due to Linux being unable to assign a PCI BAR for the i2c-controller). Link: https://bugzilla.kernel.org/show_bug.cgi?id=216565 Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- arch/x86/pci/acpi.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)