[PATCH v2 3/6] drivers/can: add len field to can frame structures

[Dario Binacchi via Xenomai]

As mentioned in Linux, can_dlc is a misleading name that suggests a code
instead of a length. Adding the len field can_dlc becomes deprecated too.

Signed-off-by: Dario Binacchi <dario...@libero.it>
---

(no changes since v1)

 include/rtdm/uapi/can.h           | 5 ++++-
 kernel/drivers/can/rtcan_socket.h | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/rtdm/uapi/can.h b/include/rtdm/uapi/can.h
index 1c35a9b9d..0a74c764c 100644
--- a/include/rtdm/uapi/can.h
+++ b/include/rtdm/uapi/can.h
@@ -318,7 +318,10 @@ typedef struct can_frame {
        can_id_t can_id;
 
        /** Size of the payload in bytes */
-       uint8_t can_dlc;
+       union {
+               uint8_t can_dlc;
+               uint8_t len;
+       };
 
        /** Payload data bytes */
        uint8_t data[8] __attribute__ ((aligned(8)));
diff --git a/kernel/drivers/can/rtcan_socket.h 
b/kernel/drivers/can/rtcan_socket.h
index cf4422a1b..35ce13c3c 100644
--- a/kernel/drivers/can/rtcan_socket.h
+++ b/kernel/drivers/can/rtcan_socket.h
@@ -76,7 +76,10 @@ struct rtcan_rb_frame {
     /* DLC (between 0 and 15) and mark if frame has got a timestamp. The
      * existence of a timestamp is indicated by the RTCAN_HAS_TIMESTAMP
      * bit. */
-    unsigned char       can_dlc;
+    union {
+        unsigned char   can_dlc;
+        unsigned char   len;
+    };
 
     /* Data bytes */
     uint8_t             data[8];
-- 
2.17.1