Commit 8b706884 authored Aug 14, 2015 by Christophe Ricard Committed by Samuel Ortiz Aug 17, 2015

nfc: st-nci: Free data with irrelevant NDLC PCB_SYNC value



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"
transactions.

Cc: stable@vger.kernel.org
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

parent 1d816b6e

drivers/nfc/st-nci/ndlc.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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);
		}
		}
		}