diff options
| -rw-r--r-- | drivers/platform/x86/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/platform/x86/think-lmi.c | 8 |
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index e5cbd58a99f3..9f39547d98f6 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -659,6 +659,7 @@ config THINKPAD_ACPI_HOTKEY_POLL config THINKPAD_LMI tristate "Lenovo WMI-based systems management driver" depends on ACPI_WMI + depends on DMI select FW_ATTR_CLASS help This driver allows changing BIOS settings on Lenovo machines whose diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index 00b1e7c79a3d..02ede1ec99e9 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -772,6 +772,7 @@ static ssize_t certificate_store(struct kobject *kobj, struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj); enum cert_install_mode install_mode = TLMI_CERT_INSTALL; char *auth_str, *new_cert; + const char *serial; char *signature; char *guid; int ret; @@ -789,9 +790,10 @@ static ssize_t certificate_store(struct kobject *kobj, return -EACCES; /* Format: 'serial#, signature' */ - auth_str = cert_command(setting, - dmi_get_system_info(DMI_PRODUCT_SERIAL), - setting->signature); + serial = dmi_get_system_info(DMI_PRODUCT_SERIAL); + if (!serial) + return -ENODEV; + auth_str = cert_command(setting, serial, setting->signature); if (!auth_str) return -ENOMEM; |