1 files changed, 6 insertions, 10 deletions

diff --git a/net/sctp/stream_interleave.c b/net/sctp/stream_interleave.c
index 8c7cf8f08711..d3764c181299 100644
--- a/net/sctp/stream_interleave.c
+++ b/net/sctp/stream_interleave.c
@@ -3,7 +3,8 @@
  *
  * This file is part of the SCTP kernel implementation
  *
- * These functions manipulate sctp stream queue/scheduling.
+ * These functions implement sctp stream message interleaving, mostly
+ * including I-DATA and I-FORWARD-TSN chunks process.
  *
  * This SCTP implementation is free software;
  * you can redistribute it and/or modify it under the terms of
@@ -954,12 +955,8 @@ static void sctp_renege_events(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk,
         __u32 freed = 0;
         __u16 needed;
 
-        if (chunk) {
-                needed = ntohs(chunk->chunk_hdr->length);
-                needed -= sizeof(struct sctp_idata_chunk);
-        } else {
-                needed = SCTP_DEFAULT_MAXWINDOW;
-        }
+        needed = ntohs(chunk->chunk_hdr->length) -
+                 sizeof(struct sctp_idata_chunk);
 
         if (skb_queue_empty(&asoc->base.sk->sk_receive_queue)) {
                 freed = sctp_ulpq_renege_list(ulpq, &ulpq->lobby, needed);
@@ -971,9 +968,8 @@ static void sctp_renege_events(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk,
                                                        needed);
         }
 
-        if (chunk && freed >= needed)
-                if (sctp_ulpevent_idata(ulpq, chunk, gfp) <= 0)
-                        sctp_intl_start_pd(ulpq, gfp);
+        if (freed >= needed && sctp_ulpevent_idata(ulpq, chunk, gfp) <= 0)
+                sctp_intl_start_pd(ulpq, gfp);
 
         sk_mem_reclaim(asoc->base.sk);
 }