From: Mark Pearson mpearson-lenovo@squebb.ca
[ Upstream commit 7065655216d4d034d71164641f3bec0b189ad6fa ]
On ThinkStations on retrieving the attribute value the BIOS appends the possible values to the string. Clean up the display in the current_value_show function so the options part is not displayed.
Fixes: a40cd7ef22fb ("platform/x86: think-lmi: Add WMI interface support on Lenovo platforms") Reported by Mario Limoncello Mario.Limonciello@amd.com Link: https://github.com/fwupd/fwupd/issues/5077#issuecomment-1488730526 Signed-off-by: Mark Pearson mpearson-lenovo@squebb.ca Link: https://lore.kernel.org/r/20230403013120.2105-2-mpearson-lenovo@squebb.ca Tested-by: Mario Limonciello mario.limonciello@amd.com Tested-by: Mirsad Goran Todorovac mirsad.todorovac@alu.unizg.hr Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/think-lmi.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index ded3aacb26cc9..76f0d04e17f30 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -504,7 +504,7 @@ static ssize_t display_name_show(struct kobject *kobj, struct kobj_attribute *at static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj); - char *item, *value; + char *item, *value, *p; int ret;
ret = tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID); @@ -515,9 +515,12 @@ static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *a value = strpbrk(item, ","); if (!value || value == item || !strlen(value + 1)) ret = -EINVAL; - else + else { + /* On Workstations remove the Options part after the value */ + p = strchrnul(value, ';'); + *p = '\0'; ret = sysfs_emit(buf, "%s\n", value + 1); - + } kfree(item);
return ret;