From 841bdb7c0bde0fb2068c64a09bb89a06be63c4d6 Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Mon, 14 May 2018 07:09:51 +0900 Subject: ALSA: vmaster: use position offset macro of TLV data A series of SNDRV_CTL_TLVO_XXX macro was introduced for position offset of TLV data. This commit applies a code optimization. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/core/vmaster.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'sound/core') diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index 9e96186742d0..58fa3f94722a 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -421,13 +421,15 @@ struct snd_kcontrol *snd_ctl_make_virtual_master(char *name, kctl->private_free = master_free; /* additional (constant) TLV read */ - if (tlv && - (tlv[0] == SNDRV_CTL_TLVT_DB_SCALE || - tlv[0] == SNDRV_CTL_TLVT_DB_MINMAX || - tlv[0] == SNDRV_CTL_TLVT_DB_MINMAX_MUTE)) { - kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ; - memcpy(master->tlv, tlv, sizeof(master->tlv)); - kctl->tlv.p = master->tlv; + if (tlv) { + unsigned int type = tlv[SNDRV_CTL_TLVO_TYPE]; + if (type == SNDRV_CTL_TLVT_DB_SCALE || + type == SNDRV_CTL_TLVT_DB_MINMAX || + type == SNDRV_CTL_TLVT_DB_MINMAX_MUTE) { + kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ; + memcpy(master->tlv, tlv, sizeof(master->tlv)); + kctl->tlv.p = master->tlv; + } } return kctl; -- cgit v1.2.3