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pcm: softvol - fix early exit in add_tlv_info()

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2021-06-02 19:49:29 +02:00
parent 74c6382df6
commit eabadf545c
1 changed files with 2 additions and 2 deletions
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4
src/pcm/pcm_softvol.c
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@ -711,13 +711,13 @@ static int add_tlv_info(snd_pcm_softvol_t *svol, snd_ctl_elem_info_t *cinfo,
unsigned int *old_tlv, size_t old_tlv_size) unsigned int *old_tlv, size_t old_tlv_size)
{ {
unsigned int tlv[4]; unsigned int tlv[4];
if (sizeof(tlv) <= old_tlv_size && memcmp(tlv, old_tlv, sizeof(tlv)) == 0)
return 0;
tlv[SNDRV_CTL_TLVO_TYPE] = SND_CTL_TLVT_DB_SCALE; tlv[SNDRV_CTL_TLVO_TYPE] = SND_CTL_TLVT_DB_SCALE;
tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(int); tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(int);
tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = (int)(svol->min_dB * 100); tlv[SNDRV_CTL_TLVO_DB_SCALE_MIN] = (int)(svol->min_dB * 100);
tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] = tlv[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] =
(int)((svol->max_dB - svol->min_dB) * 100 / svol->max_val); (int)((svol->max_dB - svol->min_dB) * 100 / svol->max_val);
if (sizeof(tlv) <= old_tlv_size && memcmp(tlv, old_tlv, sizeof(tlv)) == 0)
return 0;
return snd_ctl_elem_tlv_write(svol->ctl, &cinfo->id, tlv); return snd_ctl_elem_tlv_write(svol->ctl, &cinfo->id, tlv);
} }