bsc: lchan_select: Avoid returning a TCH/H lchan when TCH/F is requested

If BTS is configured to have only TCH/F_PDCH and TCH/H and a call is
resolved to require TCH/F, don't return the TCH/H which have no use, but
instead let it allocate the TCH/F_PDCH.

20181128185013783 DRLL <0000> lchan_select.c:159 (bts=0) lchan_select_by_type(TCH_F)
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=0,pchan=CCCH+SDCCH4,state=IN_USE) is != TCH/F
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=1,pchan=SDCCH8,state=UNUSED) is != TCH/F
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=2,pchan=TCH/H,state=UNUSED) is != TCH/F
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=3,pchan=TCH/H,state=UNUSED) is != TCH/F
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=4,pchan=TCH/H,state=UNUSED) is != TCH/F
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=5,pchan=TCH/H,state=UNUSED) is != TCH/F
20181128185013783 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=6,pchan_on_init=TCH/F_PDCH,pchan=PDCH,state=PDCH) is != TCH/F
20181128185013784 DRLL <0000> lchan_select.c:71 looking for lchan TCH/F: (bts=0,trx=0,ts=7,pchan_on_init=TCH/F_PDCH,pchan=PDCH,state=PDCH) is != TCH/F
20181128185013784 DRLL <0000> lchan_select.c:71 looking for lchan TCH/H: (bts=0,trx=0,ts=0,pchan=CCCH+SDCCH4,state=IN_USE) is != TCH/H
20181128185013784 DRLL <0000> lchan_select.c:71 looking for lchan TCH/H: (bts=0,trx=0,ts=1,pchan=SDCCH8,state=UNUSED) is != TCH/H
20181128185013784 DRLL <0000> lchan_select.c:86 looking for lchan TCH/H: (bts=0,trx=0,ts=2,pchan=TCH/H,state=UNUSED) ss=0 is available
20181128185013784 DCHAN <0010> lchan_select.c:253 lchan(0-0-2-TCH_H-0)[0x6120000066a0]{UNUSED}: (type=TCH_H) Selected

Change-Id: I9a73beb0432fab16d5430e5b40d470694e09b189
1 file changed