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ALSA: aloop: Fix PCM format assignment

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Fix sparse warnings about PCM format assignment regarding the strong
typed snd_pcm_format_t:
  sound/drivers/aloop.c:352:45: warning: restricted snd_pcm_format_t degrades to integer
  sound/drivers/aloop.c:355:39: warning: incorrect type in assignment (different base types)
  sound/drivers/aloop.c:355:39:    expected unsigned int format
  sound/drivers/aloop.c:355:39:    got restricted snd_pcm_format_t [usertype] format
  sound/drivers/aloop.c:1435:34: warning: incorrect type in assignment (different base types)
  sound/drivers/aloop.c:1435:34:    expected long max
  sound/drivers/aloop.c:1435:34:    got restricted snd_pcm_format_t [usertype]
  sound/drivers/aloop.c:1565:39: warning: incorrect type in assignment (different base types)
  sound/drivers/aloop.c:1565:39:    expected unsigned int format
  sound/drivers/aloop.c:1565:39:    got restricted snd_pcm_format_t [usertype]

Some code in this driver assigns an integer value to snd_pcm_format_t
via control API, and they need to be with the explicit cast.

No functional changes, just sparse warning fixes.

Link: https://lore.kernel.org/r/20200206163945.6797-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-02-06 17:39:38 +01:00
parent f4caf8993e
commit 8c356c524a
1 changed files with 3 additions and 3 deletions
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6
sound/drivers/aloop.c
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@ -118,7 +118,7 @@ struct loopback_cable {
struct loopback_setup {
unsigned int notify: 1;
unsigned int rate_shift;
unsigned int format;
snd_pcm_format_t format;
unsigned int rate;
unsigned int channels;
struct snd_ctl_elem_id active_id;
@ -1432,7 +1432,7 @@ static int loopback_format_info(struct snd_kcontrol *kcontrol,
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = SNDRV_PCM_FORMAT_LAST;
uinfo->value.integer.max = (__force int)SNDRV_PCM_FORMAT_LAST;
uinfo->value.integer.step = 1;
return 0;
}
@ -1443,7 +1443,7 @@ static int loopback_format_get(struct snd_kcontrol *kcontrol,
struct loopback *loopback = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] =
loopback->setup[kcontrol->id.subdevice]
(__force int)loopback->setup[kcontrol->id.subdevice]
[kcontrol->id.device].format;
return 0;
}