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ALSA: add/change some comments describing function return values

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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>
This commit is contained in:
Yacine Belkadi
2013-03-11 22:05:14 +01:00
committed by Takashi Iwai
parent a817650ebb
commit eb7c06e8e9
24 changed files with 221 additions and 126 deletions
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23
include/sound/pcm.h
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@@ -659,7 +659,7 @@ static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime
*
* Checks whether enough free space is available on the playback buffer.
*
* Returns non-zero if available, or zero if not.
* Return: Non-zero if available, or zero if not.
*/
static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream)
{
@@ -673,7 +673,7 @@ static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream)
*
* Checks whether enough capture data is available on the capture buffer.
*
* Returns non-zero if available, or zero if not.
* Return: Non-zero if available, or zero if not.
*/
static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream)
{
@@ -685,10 +685,10 @@ static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream)
* snd_pcm_playback_data - check whether any data exists on the playback buffer
* @substream: the pcm substream instance
*
* Checks whether any data exists on the playback buffer. If stop_threshold
* is bigger or equal to boundary, then this function returns always non-zero.
* Checks whether any data exists on the playback buffer.
*
* Returns non-zero if exists, or zero if not.
* Return: Non-zero if any data exists, or zero if not. If stop_threshold
* is bigger or equal to boundary, then this function returns always non-zero.
*/
static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream)
{
@@ -705,7 +705,7 @@ static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream)
*
* Checks whether the playback buffer is empty.
*
* Returns non-zero if empty, or zero if not.
* Return: Non-zero if empty, or zero if not.
*/
static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream)
{
@@ -719,7 +719,7 @@ static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream)
*
* Checks whether the capture buffer is empty.
*
* Returns non-zero if empty, or zero if not.
* Return: Non-zero if empty, or zero if not.
*/
static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream)
{
@@ -852,7 +852,7 @@ int snd_pcm_format_big_endian(snd_pcm_format_t format);
* snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian
* @format: the format to check
*
* Returns 1 if the given PCM format is CPU-endian, 0 if
* Return: 1 if the given PCM format is CPU-endian, 0 if
* opposite, or a negative error code if endian not specified.
*/
int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
@@ -963,7 +963,7 @@ struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
* contiguous in kernel virtual space, but not in physical memory. Use this
* if the buffer is accessed by kernel code but not by device DMA.
*
* Returns 1 if the buffer was changed, 0 if not changed, or a negative error
* Return: 1 if the buffer was changed, 0 if not changed, or a negative error
* code.
*/
static int snd_pcm_lib_alloc_vmalloc_buffer
@@ -975,6 +975,9 @@ static int snd_pcm_lib_alloc_vmalloc_buffer
*
* This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses
* vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory.
*
* Return: 1 if the buffer was changed, 0 if not changed, or a negative error
* code.
*/
static int snd_pcm_lib_alloc_vmalloc_32_buffer
(struct snd_pcm_substream *substream, size_t size);
@@ -1070,6 +1073,8 @@ const char *snd_pcm_format_name(snd_pcm_format_t format);
/**
* snd_pcm_stream_str - Get a string naming the direction of a stream
* @substream: the pcm substream instance
*
* Return: A string naming the direction of the stream.
*/
static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream)
{