caif: Add BUG_ON if dev_info is missing in packet

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/caif/cfmuxl.c b/net/caif/cfmuxl.c
index ebfda2c9290b..fc2497468571 100644
--- a/net/caif/cfmuxl.c
+++ b/net/caif/cfmuxl.c
@@ -188,7 +188,8 @@ static int cfmuxl_transmit(struct cflayer *layr, struct cfpkt *pkt)
         u8 linkid;
         struct cflayer *dn;
         struct caif_payload_info *info = cfpkt_info(pkt);
-        dn = get_dn(muxl, cfpkt_info(pkt)->dev_info);
+        BUG_ON(!info);
+        dn = get_dn(muxl, info->dev_info);
         if (dn == NULL) {
                 pr_warn("Send data on unknown phy ID = %d (0x%x)\n",
                         info->dev_info->id, info->dev_info->id);