net: caif: fix error code handling

cfpkt_peek_head return 0 and 1, caller is checking error using <0

Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/caif/cfrfml.c b/net/caif/cfrfml.c
index ce2767e..7b0af33 100644 (file)
--- a/net/caif/cfrfml.c
+++ b/net/caif/cfrfml.c
@@ -116,7 +116,7 @@ static int cfrfml_receive(struct cflayer *layr, struct cfpkt *pkt)
        if (segmented) {
                if (rfml->incomplete_frm == NULL) {
                        /* Initial Segment */
-                       if (cfpkt_peek_head(pkt, rfml->seghead, 6) < 0)
+                       if (cfpkt_peek_head(pkt, rfml->seghead, 6) != 0)
                                goto out;
 
                        rfml->pdu_size = get_unaligned_le16(rfml->seghead+4);
@@ -233,7 +233,7 @@ static int cfrfml_transmit(struct cflayer *layr, struct cfpkt *pkt)
        if (cfpkt_getlen(pkt) > rfml->fragment_size + RFM_HEAD_SIZE)
                err = cfpkt_peek_head(pkt, head, 6);
 
-       if (err < 0)
+       if (err != 0)
                goto out;
 
        while (cfpkt_getlen(frontpkt) > rfml->fragment_size + RFM_HEAD_SIZE) {