NFC: Avoid falling back to SYMM when sk is NULL

In some cases (SNL, DISC, DM) we need to send an LLCP skbs without
having a sock owning it. I frames are an exception here since
they may be requeued to the llcp_sock queue.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index cc10d073c338..71cc8af097a4 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -610,7 +610,10 @@ static void nfc_llcp_tx_work(struct work_struct *work)
         if (skb != NULL) {
                 sk = skb->sk;
                 llcp_sock = nfc_llcp_sock(sk);
-                if (llcp_sock != NULL) {
+
+                if (llcp_sock == NULL && nfc_llcp_ptype(skb) == LLCP_PDU_I) {
+                        nfc_llcp_send_symm(local->dev);
+                } else {
                         int ret;
 
                         pr_debug("Sending pending skb\n");
@@ -629,8 +632,6 @@ static void nfc_llcp_tx_work(struct work_struct *work)
                                 skb_queue_tail(&llcp_sock->tx_pending_queue,
                                                skb);
                         }
-                } else {
-                        nfc_llcp_send_symm(local->dev);
                 }
         } else {
                 nfc_llcp_send_symm(local->dev);