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dyn PDCH: Fix free slot search for chan_alloc_reverse == true 

For chan_alloc_reverse, _lc_find_trx() should return the last free slot instead
of the first.

Original patch by jolly, but split in two by nhofmeyr.

Change-Id: Iff980242b9b5cb39345aaad0350ee368537677cd
This commit is contained in:
Andreas Eversberg 2013-10-11 13:05:16 +02:00 committed by Harald Welte
parent ec744655b4
commit 0434efa077
1 changed files with 14 additions and 2 deletions
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16
openbsc/src/libbsc/chan_alloc.c
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@ -75,12 +75,24 @@ static struct gsm_lchan *
_lc_find_trx(struct gsm_bts_trx *trx, enum gsm_phys_chan_config pchan)
{
struct gsm_bts_trx_ts *ts;
int j, ss;
int j, start, stop, dir, ss;
if (!trx_is_usable(trx))
return NULL;
for (j = 0; j < 8; j++) {
if (trx->bts->chan_alloc_reverse) {
/* check TS 7..0 */
start = 7;
stop = -1;
dir = -1;
} else {
/* check TS 0..7 */
start = 0;
stop = 8;
dir = 1;
}
for (j = start; j != stop; j += dir) {
ts = &trx->ts[j];
if (!ts_is_usable(ts))
continue;