sctp: remove completely unsed EMPTY state

SCTP does not SCTP_STATE_EMPTY and we can never be in
that state.  Remove useless code.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/sctp/constants.h

@@ -187,15 +187,14 @@ typedef enum {
 /* SCTP state defines for internal state machine */
 typedef enum {
 
-	SCTP_STATE_EMPTY		= 0,
-	SCTP_STATE_CLOSED		= 1,
-	SCTP_STATE_COOKIE_WAIT		= 2,
-	SCTP_STATE_COOKIE_ECHOED	= 3,
-	SCTP_STATE_ESTABLISHED		= 4,
-	SCTP_STATE_SHUTDOWN_PENDING	= 5,
-	SCTP_STATE_SHUTDOWN_SENT	= 6,
-	SCTP_STATE_SHUTDOWN_RECEIVED	= 7,
-	SCTP_STATE_SHUTDOWN_ACK_SENT	= 8,
+	SCTP_STATE_CLOSED		= 0,
+	SCTP_STATE_COOKIE_WAIT		= 1,
+	SCTP_STATE_COOKIE_ECHOED	= 2,
+	SCTP_STATE_ESTABLISHED		= 3,
+	SCTP_STATE_SHUTDOWN_PENDING	= 4,
+	SCTP_STATE_SHUTDOWN_SENT	= 5,
+	SCTP_STATE_SHUTDOWN_RECEIVED	= 6,
+	SCTP_STATE_SHUTDOWN_ACK_SENT	= 7,
 
 } sctp_state_t;
 

net/sctp/debug.c

@@ -98,7 +98,6 @@ const char *sctp_cname(const sctp_subtype_t cid)
 
 /* These are printable forms of the states.  */
 const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
-	"STATE_EMPTY",
 	"STATE_CLOSED",
 	"STATE_COOKIE_WAIT",
 	"STATE_COOKIE_ECHOED",

net/sctp/outqueue.c

@@ -320,7 +320,6 @@ int sctp_outq_tail(struct sctp_outq *q, struct sctp_chunk *chunk)
 		 * chunk.
 		 */
 		switch (q->asoc->state) {
-		case SCTP_STATE_EMPTY:
 		case SCTP_STATE_CLOSED:
 		case SCTP_STATE_SHUTDOWN_PENDING:
 		case SCTP_STATE_SHUTDOWN_SENT: