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-rw-r--r--arch/i386/kernel/dmi_scan.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/i386/kernel/dmi_scan.c b/arch/i386/kernel/dmi_scan.c
index ca2a0cbcac0..d2dfd9c8d69 100644
--- a/arch/i386/kernel/dmi_scan.c
+++ b/arch/i386/kernel/dmi_scan.c
@@ -299,3 +299,33 @@ struct dmi_device * dmi_find_device(int type, const char *name,
return NULL;
}
EXPORT_SYMBOL(dmi_find_device);
+
+/**
+ * dmi_get_year - Return year of a DMI date
+ * @field: data index (like dmi_get_system_info)
+ *
+ * Returns -1 when the field doesn't exist. 0 when it is broken.
+ */
+int dmi_get_year(int field)
+{
+ int year;
+ char *s = dmi_get_system_info(field);
+
+ if (!s)
+ return -1;
+ if (*s == '\0')
+ return 0;
+ s = strrchr(s, '/');
+ if (!s)
+ return 0;
+
+ s += 1;
+ year = simple_strtoul(s, NULL, 0);
+ if (year && year < 100) { /* 2-digit year */
+ year += 1900;
+ if (year < 1996) /* no dates < spec 1.0 */
+ year += 100;
+ }
+
+ return year;
+}