diff options
| -rw-r--r-- | drivers/platform/x86/wmi.c | 22 | ||||
| -rw-r--r-- | include/linux/mod_devicetable.h | 1 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index b08ffb769cbe..f3be1c008856 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -146,6 +146,28 @@ static bool find_guid(const char *guid_string, struct wmi_block **out) return false; } +static const void *find_guid_context(struct wmi_block *wblock, + struct wmi_driver *wdriver) +{ + const struct wmi_device_id *id; + uuid_le guid_input; + + if (wblock == NULL || wdriver == NULL) + return NULL; + if (wdriver->id_table == NULL) + return NULL; + + id = wdriver->id_table; + while (*id->guid_string) { + if (uuid_le_to_bin(id->guid_string, &guid_input)) + continue; + if (!memcmp(wblock->gblock.guid, &guid_input, 16)) + return id->context; + id++; + } + return NULL; +} + static int get_subobj_info(acpi_handle handle, const char *pathname, struct acpi_device_info **info) { diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 448621c32e4d..09366859aac2 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -798,6 +798,7 @@ struct tee_client_device_id { */ struct wmi_device_id { const char guid_string[UUID_STRING_LEN+1]; + const void *context; }; #endif /* LINUX_MOD_DEVICETABLE_H */ |