Shaun Ruffell 759f0c07f0 dahdi: Do not allow 'hwec' to be attached to channels that do not have one. ...

This defines a NULL value for the name of an echocan as invalid. This
will allow dahdi_genconf to probe for the presence of a hardware echocan
on a channel by trying to attach one. If there is not a hardware echocan
available DAHDI_ATTACH_ECHOCAN ioctl will return -EINVAL if 'hwec' was
specified as the name of the echo canceler now.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9943 a0bf4364-ded3-4de4-8d8a-66a801d63aff

2011-06-02 20:01:49 +00:00

..

dahdi

dahdi: Do not allow 'hwec' to be attached to channels that do not have one.

2011-06-02 20:01:49 +00:00