ThinkStation platforms don't support the API to return possible_values
but instead embed it in the settings string.
Try and extract this information and set the possible_values attribute
appropriately.
Signed-off-by: Mark Pearson <mpearson-lenovo@xxxxxxxxx>
---
drivers/platform/x86/think-lmi.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
index 495a5e045069..52f3472fd1e0 100644
--- a/drivers/platform/x86/think-lmi.c
+++ b/drivers/platform/x86/think-lmi.c
@@ -1432,6 +1432,29 @@ static int tlmi_analyze(void)
if (ret || !setting->possible_values)
pr_info("Error retrieving possible values for %d : %s\n",
i, setting->display_name);
+ } else {
+ /*
+ * Older Thinkstations don't support the bios_selections API.
+ * Instead they store this as a [Optional:Option1,Option2] section of the
+ * name string.
+ * Try and pull that out if it's available.
+ */
+ char *item, *optstart, *optend;
+
+ if (!tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID)) {
+ optstart = strstr(item, "[Optional:");
+ if (optstart) {
+ optstart += strlen("[Optional:");
+ optend = strstr(optstart, "]");
+ if (optend) {
+ setting->possible_values =
+ kmalloc(optend - optstart, GFP_KERNEL);
+ strncpy(setting->possible_values,
+ optstart, optend - optstart);
+ setting->possible_values[optend - optstart] = '\0';
+ }
+ }
+ }
}
/* If we don't have a possible value mark as N/A */
if (!setting->possible_values) {
--
2.39.1
