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: stable@xxxxxxxxxxxxxxx
Signed-off-by: Christophe Ricard <christophe-h.ricard@xxxxxx>
---
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
--
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