Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 20 insertions, 2 deletions

diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 4a597d8c2f7..d76adfea5df 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -468,8 +468,8 @@ const char *dmi_get_system_info(int field)
 EXPORT_SYMBOL(dmi_get_system_info);
 
 /**
- *	dmi_name_in_serial - 	Check if string is in the DMI product serial
- *				information.
+ * dmi_name_in_serial - Check if string is in the DMI product serial information
+ * @str: string to check for
  */
 int dmi_name_in_serial(const char *str)
 {
@@ -582,3 +582,21 @@ int dmi_walk(void (*decode)(const struct dmi_header *))
 	return 0;
 }
 EXPORT_SYMBOL_GPL(dmi_walk);
+
+/**
+ * dmi_match - compare a string to the dmi field (if exists)
+ * @f: DMI field identifier
+ * @str: string to compare the DMI field to
+ *
+ * Returns true if the requested field equals to the str (including NULL).
+ */
+bool dmi_match(enum dmi_field f, const char *str)
+{
+	const char *info = dmi_get_system_info(f);
+
+	if (info == NULL || str == NULL)
+		return info == str;
+
+	return !strcmp(info, str);
+}
+EXPORT_SYMBOL_GPL(dmi_match);