dmi: Let dmi_walk() users pass private data

At the moment, dmi_walk() lacks flexibility, users can't pass data to
the callback function. Add a pointer for private data to make this
function more flexible.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Roland Dreier <rolandd@cisco.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index d741b9ceb0e0..bb5489c82c99 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -47,7 +47,8 @@ extern int dmi_get_year(int field);
 extern int dmi_name_in_vendors(const char *str);
 extern int dmi_name_in_serial(const char *str);
 extern int dmi_available;
-extern int dmi_walk(void (*decode)(const struct dmi_header *));
+extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
+        void *private_data);
 extern bool dmi_match(enum dmi_field f, const char *str);
 
 #else
@@ -61,8 +62,8 @@ static inline int dmi_get_year(int year) { return 0; }
 static inline int dmi_name_in_vendors(const char *s) { return 0; }
 static inline int dmi_name_in_serial(const char *s) { return 0; }
 #define dmi_available 0
-static inline int dmi_walk(void (*decode)(const struct dmi_header *))
-        { return -1; }
+static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
+        void *private_data) { return -1; }
 static inline bool dmi_match(enum dmi_field f, const char *str)
         { return false; }
 static inline const struct dmi_system_id *