From: Takashi Sakamoto Date: Mon, 9 Feb 2015 15:27:19 +0000 (+0900) Subject: control: complement comment for subscribe API X-Git-Tag: v1.0.29~6 X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=4e398ddfcf283b706f23d3759f737dc5dd05435f;p=alsa-lib.git control: complement comment for subscribe API When minus value is given as a parameter, the API returns whether the caller has already subscribed or not. This commit adds a comment about this so as better documentation. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- diff --git a/src/control/control.c b/src/control/control.c index dd428a15..4a28cf6e 100644 --- a/src/control/control.c +++ b/src/control/control.c @@ -213,7 +213,7 @@ int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsign /** * \brief Ask to be informed about events (poll, #snd_async_add_ctl_handler, #snd_ctl_read) * \param ctl CTL handle - * \param subscribe 0 = unsubscribe, 1 = subscribe + * \param subscribe 0 = unsubscribe, 1 = subscribe, -1 = check subscribe or not * \return 0 on success otherwise a negative error code */ int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe)