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-rw-r--r--drivers/firmware/dmi_scan.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index e763e1484331..e35c5e04c46a 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -1005,6 +1005,26 @@ out:
EXPORT_SYMBOL(dmi_get_date);
/**
+ * dmi_get_bios_year - get a year out of DMI_BIOS_DATE field
+ *
+ * Returns year on success, -ENXIO if DMI is not selected,
+ * or a different negative error code if DMI field is not present
+ * or not parseable.
+ */
+int dmi_get_bios_year(void)
+{
+ bool exists;
+ int year;
+
+ exists = dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL);
+ if (!exists)
+ return -ENODATA;
+
+ return year ? year : -ERANGE;
+}
+EXPORT_SYMBOL(dmi_get_bios_year);
+
+/**
* dmi_walk - Walk the DMI table and get called back for every record
* @decode: Callback function
* @private_data: Private data to be passed to the callback function