tree 7cb5eeb6df65aed7bb34c2b4ca3acd98f5ed04a8
parent fc02ff459aa5a85624e2ed64b168f582ece410e3
author Neels Hofmeyr <neels@hofmeyr.de> 1622323867 +0000
committer Neels Hofmeyr <neels@hofmeyr.de> 1622331922 +0000

fixup for gsm48_chan_mode_to_non_vamos()

When modifying chan modes, I first thought rather always fail if there
is no equivalent mode.

That is true for gsm48_chan_mode_to_vamos(), but for a change to
non-VAMOS, rather return the unchanged mode for non-VAMOS modes, so that
gsm48_chan_mode_to_non_vamos(GSM_CMODE_SIGN) works without failure.

This makes more convenient checking, e.g. in osmo-bsc's lchan_fsm.c
making sure that a non-VAMOS lchan has a non-VAMOS chan_mode, for all
types of lchans.

Change-Id: Ibf20f04d167e0e0599012ff530bc17ba8c8ab562