diff options
Diffstat (limited to '')
-rw-r--r-- | sound/core/pcm_misc.c | 49 |
1 files changed, 29 insertions, 20 deletions
diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c index a6a541511534..5588b6a1ee8b 100644 --- a/sound/core/pcm_misc.c +++ b/sound/core/pcm_misc.c @@ -42,6 +42,11 @@ struct pcm_format_data { /* we do lots of calculations on snd_pcm_format_t; shut up sparse */ #define INT __force int +static bool valid_format(snd_pcm_format_t format) +{ + return (INT)format >= 0 && (INT)format <= (INT)SNDRV_PCM_FORMAT_LAST; +} + static const struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = { [SNDRV_PCM_FORMAT_S8] = { .width = 8, .phys = 8, .le = -1, .signd = 1, @@ -259,9 +264,10 @@ static const struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = int snd_pcm_format_signed(snd_pcm_format_t format) { int val; - if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) + if (!valid_format(format)) return -EINVAL; - if ((val = pcm_formats[(INT)format].signd) < 0) + val = pcm_formats[(INT)format].signd; + if (val < 0) return -EINVAL; return val; } @@ -307,9 +313,10 @@ EXPORT_SYMBOL(snd_pcm_format_linear); int snd_pcm_format_little_endian(snd_pcm_format_t format) { int val; - if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) + if (!valid_format(format)) return -EINVAL; - if ((val = pcm_formats[(INT)format].le) < 0) + val = pcm_formats[(INT)format].le; + if (val < 0) return -EINVAL; return val; } @@ -343,9 +350,10 @@ EXPORT_SYMBOL(snd_pcm_format_big_endian); int snd_pcm_format_width(snd_pcm_format_t format) { int val; - if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) + if (!valid_format(format)) return -EINVAL; - if ((val = pcm_formats[(INT)format].width) == 0) + val = pcm_formats[(INT)format].width; + if (!val) return -EINVAL; return val; } @@ -361,9 +369,10 @@ EXPORT_SYMBOL(snd_pcm_format_width); int snd_pcm_format_physical_width(snd_pcm_format_t format) { int val; - if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) + if (!valid_format(format)) return -EINVAL; - if ((val = pcm_formats[(INT)format].phys) == 0) + val = pcm_formats[(INT)format].phys; + if (!val) return -EINVAL; return val; } @@ -394,7 +403,7 @@ EXPORT_SYMBOL(snd_pcm_format_size); */ const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format) { - if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) + if (!valid_format(format)) return NULL; if (! pcm_formats[(INT)format].phys) return NULL; @@ -418,13 +427,13 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int unsigned char *dst; const unsigned char *pat; - if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) + if (!valid_format(format)) return -EINVAL; if (samples == 0) return 0; width = pcm_formats[(INT)format].phys; /* physical width */ pat = pcm_formats[(INT)format].silence; - if (! width) + if (!width || !pat) return -EINVAL; /* signed or 1 byte data */ if (pcm_formats[(INT)format].signd == 1 || width <= 8) { @@ -474,32 +483,32 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int EXPORT_SYMBOL(snd_pcm_format_set_silence); /** - * snd_pcm_limit_hw_rates - determine rate_min/rate_max fields - * @runtime: the runtime instance + * snd_pcm_hw_limit_rates - determine rate_min/rate_max fields + * @hw: the pcm hw instance * * Determines the rate_min and rate_max fields from the rates bits of - * the given runtime->hw. + * the given hw. * * Return: Zero if successful. */ -int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime) +int snd_pcm_hw_limit_rates(struct snd_pcm_hardware *hw) { int i; for (i = 0; i < (int)snd_pcm_known_rates.count; i++) { - if (runtime->hw.rates & (1 << i)) { - runtime->hw.rate_min = snd_pcm_known_rates.list[i]; + if (hw->rates & (1 << i)) { + hw->rate_min = snd_pcm_known_rates.list[i]; break; } } for (i = (int)snd_pcm_known_rates.count - 1; i >= 0; i--) { - if (runtime->hw.rates & (1 << i)) { - runtime->hw.rate_max = snd_pcm_known_rates.list[i]; + if (hw->rates & (1 << i)) { + hw->rate_max = snd_pcm_known_rates.list[i]; break; } } return 0; } -EXPORT_SYMBOL(snd_pcm_limit_hw_rates); +EXPORT_SYMBOL(snd_pcm_hw_limit_rates); /** * snd_pcm_rate_to_rate_bit - converts sample rate to SNDRV_PCM_RATE_xxx bit |