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ALSA: pcm_format_to_bits strong-typed conversion

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Add a function to handle conversion from snd_pcm_format_t
to bitwise with proper typing.

Change such conversions to use this function and silence sparse
warnings.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Eldad Zack 2013-04-23 01:00:41 +02:00 committed by Takashi Iwai
parent 754813473c
commit 74c34ca1cc
8 changed files with 18 additions and 11 deletions
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6
include/sound/pcm.h
View File

@ -1133,4 +1133,10 @@ int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream,
unsigned long private_value,
struct snd_pcm_chmap **info_ret);
/* Strong-typed conversion of pcm_format to bitwise */
static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format)
{
return 1ULL << (__force int) pcm_format;
}
#endif /* __SOUND_PCM_H */

2
sound/aoa/soundbus/i2sbus/pcm.c
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@ -179,7 +179,7 @@ static int i2sbus_pcm_open(struct i2sbus_dev *i2sdev, int in)
*/
if (other->active) {
/* FIXME: is this guaranteed by the alsa api? */
hw->formats &= (1ULL << i2sdev->format);
hw->formats &= pcm_format_to_bits(i2sdev->format);
/* see above, restrict rates to the one we already have */
hw->rate_min = i2sdev->rate;
hw->rate_max = i2sdev->rate;

4
sound/atmel/ac97c.c
View File

@ -182,7 +182,7 @@ static int atmel_ac97c_playback_open(struct snd_pcm_substream *substream)
runtime->hw.rate_max = chip->cur_rate;
}
if (chip->cur_format)
runtime->hw.formats = (1ULL << chip->cur_format);
runtime->hw.formats = pcm_format_to_bits(chip->cur_format);
mutex_unlock(&opened_mutex);
chip->playback_substream = substream;
return 0;
@ -201,7 +201,7 @@ static int atmel_ac97c_capture_open(struct snd_pcm_substream *substream)
runtime->hw.rate_max = chip->cur_rate;
}
if (chip->cur_format)
runtime->hw.formats = (1ULL << chip->cur_format);
runtime->hw.formats = pcm_format_to_bits(chip->cur_format);
mutex_unlock(&opened_mutex);
chip->capture_substream = substream;
return 0;

2
sound/drivers/aloop.c
View File

@ -325,7 +325,7 @@ static void params_change(struct snd_pcm_substream *substream)
struct loopback_pcm *dpcm = runtime->private_data;
struct loopback_cable *cable = dpcm->cable;
cable->hw.formats = (1ULL << runtime->format);
cable->hw.formats = pcm_format_to_bits(runtime->format);
cable->hw.rate_min = runtime->rate;
cable->hw.rate_max = runtime->rate;
cable->hw.channels_min = runtime->channels;

4
sound/pci/asihpi/asihpi.c
View File

@ -966,7 +966,7 @@ static u64 snd_card_asihpi_playback_formats(struct snd_card_asihpi *asihpi,
if (!err)
err = hpi_outstream_query_format(h_stream, &hpi_format);
if (!err && (hpi_to_alsa_formats[format] != -1))
formats |= (1ULL << hpi_to_alsa_formats[format]);
formats |= pcm_format_to_bits(hpi_to_alsa_formats[format]);
}
return formats;
}
@ -1142,7 +1142,7 @@ static u64 snd_card_asihpi_capture_formats(struct snd_card_asihpi *asihpi,
if (!err)
err = hpi_instream_query_format(h_stream, &hpi_format);
if (!err)
formats |= (1ULL << hpi_to_alsa_formats[format]);
formats |= pcm_format_to_bits(hpi_to_alsa_formats[format]);
}
return formats;
}

5
sound/usb/format.c
View File

@ -365,7 +365,8 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
{
struct usb_interface_descriptor *altsd = get_iface_desc(iface);
int protocol = altsd->bInterfaceProtocol;
int pcm_format, ret;
snd_pcm_format_t pcm_format;
int ret;
if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
/* FIXME: the format type is really IECxxx
@ -384,7 +385,7 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
default:
pcm_format = SNDRV_PCM_FORMAT_S16_LE;
}
fp->formats = 1uLL << pcm_format;
fp->formats = pcm_format_to_bits(pcm_format);
} else {
fp->formats = parse_audio_format_i_type(chip, fp, format,
fmt, protocol);

4
sound/usb/pcm.c
View File

@ -100,7 +100,7 @@ static struct audioformat *find_format(struct snd_usb_substream *subs)
int cur_attr = 0, attr;
list_for_each_entry(fp, &subs->fmt_list, list) {
if (!(fp->formats & (1uLL << subs->pcm_format)))
if (!(fp->formats & pcm_format_to_bits(subs->pcm_format)))
continue;
if (fp->channels != subs->channels)
continue;
@ -478,7 +478,7 @@ static int match_endpoint_audioformats(struct audioformat *fp,
return 0;
}
if (!(fp->formats & (1ULL << pcm_format))) {
if (!(fp->formats & pcm_format_to_bits(pcm_format))) {
snd_printdd("%s: (fmt @%p) no match for format %d\n", __func__,
fp, pcm_format);
return 0;

2
sound/usb/proc.c
View File

@ -85,7 +85,7 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
snd_iprintf(buffer, " Format:");
for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
if (fp->formats & (1uLL << fmt))
if (fp->formats & pcm_format_to_bits(fmt))
snd_iprintf(buffer, " %s",
snd_pcm_format_name(fmt));
snd_iprintf(buffer, "\n");