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ALSA: core: sparse cleanups

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Change the core code where sparse complains.  In most cases, this means
just adding annotations to confirm that we indeed want to do the dirty
things we're doing.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch
2011-02-14 11:00:47 +01:00
committed by Takashi Iwai
parent 88b27fdac8
commit fea952e5cc
18 changed files with 160 additions and 137 deletions
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35
sound/core/pcm_misc.c
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@@ -35,7 +35,10 @@ struct pcm_format_data {
unsigned char silence[8]; /* silence data to fill */
};
static struct pcm_format_data pcm_formats[SNDRV_PCM_FORMAT_LAST+1] = {
/* we do lots of calculations on snd_pcm_format_t; shut up sparse */
#define INT __force int
static struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = {
[SNDRV_PCM_FORMAT_S8] = {
.width = 8, .phys = 8, .le = -1, .signd = 1,
.silence = {},
@@ -215,9 +218,9 @@ static struct pcm_format_data pcm_formats[SNDRV_PCM_FORMAT_LAST+1] = {
int snd_pcm_format_signed(snd_pcm_format_t format)
{
int val;
if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
return -EINVAL;
if ((val = pcm_formats[format].signd) < 0)
if ((val = pcm_formats[(INT)format].signd) < 0)
return -EINVAL;
return val;
}
@@ -266,9 +269,9 @@ EXPORT_SYMBOL(snd_pcm_format_linear);
int snd_pcm_format_little_endian(snd_pcm_format_t format)
{
int val;
if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
return -EINVAL;
if ((val = pcm_formats[format].le) < 0)
if ((val = pcm_formats[(INT)format].le) < 0)
return -EINVAL;
return val;
}
@@ -304,9 +307,9 @@ EXPORT_SYMBOL(snd_pcm_format_big_endian);
int snd_pcm_format_width(snd_pcm_format_t format)
{
int val;
if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
return -EINVAL;
if ((val = pcm_formats[format].width) == 0)
if ((val = pcm_formats[(INT)format].width) == 0)
return -EINVAL;
return val;
}
@@ -323,9 +326,9 @@ EXPORT_SYMBOL(snd_pcm_format_width);
int snd_pcm_format_physical_width(snd_pcm_format_t format)
{
int val;
if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
return -EINVAL;
if ((val = pcm_formats[format].phys) == 0)
if ((val = pcm_formats[(INT)format].phys) == 0)
return -EINVAL;
return val;
}
@@ -358,11 +361,11 @@ EXPORT_SYMBOL(snd_pcm_format_size);
*/
const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format)
{
if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
return NULL;
if (! pcm_formats[format].phys)
if (! pcm_formats[(INT)format].phys)
return NULL;
return pcm_formats[format].silence;
return pcm_formats[(INT)format].silence;
}
EXPORT_SYMBOL(snd_pcm_format_silence_64);
@@ -382,16 +385,16 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int
int width;
unsigned char *dst, *pat;
if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
return -EINVAL;
if (samples == 0)
return 0;
width = pcm_formats[format].phys; /* physical width */
pat = pcm_formats[format].silence;
width = pcm_formats[(INT)format].phys; /* physical width */
pat = pcm_formats[(INT)format].silence;
if (! width)
return -EINVAL;
/* signed or 1 byte data */
if (pcm_formats[format].signd == 1 || width <= 8) {
if (pcm_formats[(INT)format].signd == 1 || width <= 8) {
unsigned int bytes = samples * width / 8;
memset(data, *pat, bytes);
return 0;