PCB_SYNC different than PCB_TYPE_SUPERVISOR or PCB_TYPE_DATAFRAME should
be discarded.

Irrelevant data may be forwarded up to the ndlc state machine by phys like
spi to prevent missing potential data during "write" transaction.

Cc: [email protected]
Signed-off-by: Christophe Ricard <[email protected]>
---
 drivers/nfc/st-nci/ndlc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nfc/st-nci/ndlc.c b/drivers/nfc/st-nci/ndlc.c
index bb08b16..4f51649 100644
--- a/drivers/nfc/st-nci/ndlc.c
+++ b/drivers/nfc/st-nci/ndlc.c
@@ -198,8 +198,10 @@ static void llt_ndlc_rcv_queue(struct llt_ndlc *ndlc)
                                kfree_skb(skb);
                                break;
                        }
-               } else {
+               } else if ((pcb & PCB_TYPE_MASK) == PCB_TYPE_DATAFRAME) {
                        nci_recv_frame(ndlc->ndev, skb);
+               } else {
+                       kfree_skb(skb);
                }
        }
 }
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to