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bsc: Some S_LCHAN signals don't provide an lchan

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Check the signal and only continue if it is any of the
signals we want to handle. In the case of measurement
reports we would cast some random code to a lchan.
This commit is contained in:
Holger Hans Peter Freyther
2010-12-27 12:30:12 +01:00
parent 59f787a4c1
commit 9ae7b29e3a
1 changed files with 14 additions and 0 deletions
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14
openbsc/src/bsc_api.c
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@@ -606,6 +606,20 @@ static int bsc_handle_lchan_signal(unsigned int subsys, unsigned int signal,
if (subsys != SS_LCHAN)
return 0;
/*
* Check if it is any of the signals we handle. We do want
* to do this early as we will need to check the lchan and
* the bsc api in it.
*/
switch (signal) {
case S_LCHAN_UNEXPECTED_RELEASE:
case S_LCHAN_ACTIVATE_ACK:
case S_LCHAN_ACTIVATE_NACK:
break;
default:
return -1;
}
lchan = (struct gsm_lchan *)signal_data;
if (!lchan || !lchan->conn)
return 0;