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authorYacine Belkadi <yacine.belkadi.1@gmail.com>2013-03-11 22:05:14 +0100
committerTakashi Iwai <tiwai@suse.de>2013-03-12 08:32:53 +0100
commiteb7c06e8e9c93b495e355421cffd3c43c266d7d2 (patch)
treef53aa110b92ff941f5d2d84d6ee38b1a45b3e005 /sound/core/pcm_native.c
parenta817650ebb451ef27db2baa7e10d0c28609bed13 (diff)
downloadlinux-eb7c06e8e9c93b495e355421cffd3c43c266d7d2.tar.bz2
ALSA: add/change some comments describing function return values
script/kernel-doc reports the following type of warnings (when run in verbose mode): Warning(sound/core/init.c:152): No description found for return value of 'snd_card_create' To fix that: - add missing descriptions of function return values - use "Return:" sections to describe those return values Along the way: - complete some descriptions - fix some typos Signed-off-by: Yacine Belkadi <yacine.belkadi.1@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm_native.c')
-rw-r--r--sound/core/pcm_native.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 71ae86ca64ac..5bce9152b64e 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -898,6 +898,8 @@ static struct action_ops snd_pcm_action_start = {
/**
* snd_pcm_start - start all linked streams
* @substream: the PCM substream instance
+ *
+ * Return: Zero if successful, or a negative error code.
*/
int snd_pcm_start(struct snd_pcm_substream *substream)
{
@@ -951,6 +953,8 @@ static struct action_ops snd_pcm_action_stop = {
* @state: PCM state after stopping the stream
*
* The state of each stream is then changed to the given state unconditionally.
+ *
+ * Return: Zero if succesful, or a negative error code.
*/
int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t state)
{
@@ -965,6 +969,8 @@ EXPORT_SYMBOL(snd_pcm_stop);
*
* After stopping, the state is changed to SETUP.
* Unlike snd_pcm_stop(), this affects only the given stream.
+ *
+ * Return: Zero if succesful, or a negative error code.
*/
int snd_pcm_drain_done(struct snd_pcm_substream *substream)
{
@@ -1098,6 +1104,9 @@ static struct action_ops snd_pcm_action_suspend = {
* @substream: the PCM substream
*
* After this call, all streams are changed to SUSPENDED state.
+ *
+ * Return: Zero if successful (or @substream is %NULL), or a negative error
+ * code.
*/
int snd_pcm_suspend(struct snd_pcm_substream *substream)
{
@@ -1120,6 +1129,8 @@ EXPORT_SYMBOL(snd_pcm_suspend);
* @pcm: the PCM instance
*
* After this call, all streams are changed to SUSPENDED state.
+ *
+ * Return: Zero if successful (or @pcm is %NULL), or a negative error code.
*/
int snd_pcm_suspend_all(struct snd_pcm *pcm)
{
@@ -1343,6 +1354,8 @@ static struct action_ops snd_pcm_action_prepare = {
* snd_pcm_prepare - prepare the PCM substream to be triggerable
* @substream: the PCM substream instance
* @file: file to refer f_flags
+ *
+ * Return: Zero if successful, or a negative error code.
*/
static int snd_pcm_prepare(struct snd_pcm_substream *substream,
struct file *file)