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[CCID]: Check if ccid is NULL in the hc_[tr]x_exit functions 

For consistency with ccid_exit and to fix a bug when
IP_DCCP_UNLOAD_HACK is enabled as the control sock is not associated
to any CCID.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Arnaldo Carvalho de Melo 2005-10-10 21:24:20 -07:00 committed by David S. Miller
parent 061cb4a0ec
commit 777b25a2fe
1 changed files with 2 additions and 2 deletions
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4
net/dccp/ccid.h
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@ -110,14 +110,14 @@ static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk)
static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk)
{
if (ccid->ccid_hc_rx_exit != NULL &&
if (ccid != NULL && ccid->ccid_hc_rx_exit != NULL &&
dccp_sk(sk)->dccps_hc_rx_ccid_private != NULL)
ccid->ccid_hc_rx_exit(sk);
}
static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk)
{
if (ccid->ccid_hc_tx_exit != NULL &&
if (ccid != NULL && ccid->ccid_hc_tx_exit != NULL &&
dccp_sk(sk)->dccps_hc_tx_ccid_private != NULL)
ccid->ccid_hc_tx_exit(sk);
}