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platform/x86: think-lmi: Add WMI certificate thumbprint support for ThinkCenter

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The ThinkCenter team are adding WMI certificate thumbprint support.

Updating the driver to enable it. They are using the same GUID as
Thinkpad/ThinkStation.
Tested on M75q Gen 5.

Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Link: https://patch.msgid.link/20251127202959.399040-1-mpearson-lenovo@squebb.ca
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Mark Pearson 2025-11-27 15:29:48 -05:00 committed by Ilpo Järvinen
parent a5b9fdd33c
commit 0512606360
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 5 additions and 1 deletions
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6
drivers/platform/x86/lenovo/think-lmi.c
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@ -195,7 +195,7 @@ static const struct tlmi_cert_guids thinkpad_cert_guid = {
};
static const struct tlmi_cert_guids thinkcenter_cert_guid = {
.thumbprint = NULL,
.thumbprint = LENOVO_CERT_THUMBPRINT_GUID, /* Same GUID as TP */
.set_bios_setting = LENOVO_TC_SET_BIOS_SETTING_CERT_GUID,
.save_bios_setting = LENOVO_TC_SAVE_BIOS_SETTING_CERT_GUID,
.cert_to_password = LENOVO_TC_CERT_TO_PASSWORD_GUID,
@ -709,6 +709,10 @@ static ssize_t cert_thumbprint(char *buf, const char *arg, int count)
if (!tlmi_priv.cert_guid->thumbprint)
return -EOPNOTSUPP;
/* Older ThinkCenter BIOS may not have support */
if (!wmi_has_guid(tlmi_priv.cert_guid->thumbprint))
return -EOPNOTSUPP;
status = wmi_evaluate_method(tlmi_priv.cert_guid->thumbprint, 0, 0, &input, &output);
if (ACPI_FAILURE(status)) {
kfree(output.pointer);