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| author | Takashi Iwai <tiwai@suse.de> | 2014-07-15 18:31:01 +0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-07-15 18:31:01 +0400 |
| commit | 0cea76f3393782d67ccea8f07e9abf341bc4f60e (patch) | |
| tree | ae39e2be9579d9a3dd2dbca041e994ea6d41d071 | |
| parent | cd3de83f147601356395b57a8673e9c5ff1e59d1 (diff) | |
| download | linux-0cea76f3393782d67ccea8f07e9abf341bc4f60e.tar.xz | |
ALSA: control: Define SNDRV_CTL_TLV_OP_* constants
Instead of hard-coded magic numbers, define constants for op_flag to
tlv callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/sound/control.h | 7 | ||||
| -rw-r--r-- | sound/core/control.c | 6 |
2 files changed, 9 insertions, 4 deletions
diff --git a/include/sound/control.h b/include/sound/control.h index 5358892b1b39..042613938a1d 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -31,10 +31,15 @@ typedef int (snd_kcontrol_info_t) (struct snd_kcontrol * kcontrol, struct snd_ct typedef int (snd_kcontrol_get_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol); typedef int (snd_kcontrol_put_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol); typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol, - int op_flag, /* 0=read,1=write,-1=command */ + int op_flag, /* SNDRV_CTL_TLV_OP_XXX */ unsigned int size, unsigned int __user *tlv); +enum { + SNDRV_CTL_TLV_OP_READ = 0, + SNDRV_CTL_TLV_OP_WRITE = 1, + SNDRV_CTL_TLV_OP_CMD = -1, +}; struct snd_kcontrol_new { snd_ctl_elem_iface_t iface; /* interface identifier */ diff --git a/sound/core/control.c b/sound/core/control.c index f0b0e14497a5..b9611344ff9e 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -1406,11 +1406,11 @@ static long snd_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg case SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS: return snd_ctl_subscribe_events(ctl, ip); case SNDRV_CTL_IOCTL_TLV_READ: - return snd_ctl_tlv_ioctl(ctl, argp, 0); + return snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_READ); case SNDRV_CTL_IOCTL_TLV_WRITE: - return snd_ctl_tlv_ioctl(ctl, argp, 1); + return snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_WRITE); case SNDRV_CTL_IOCTL_TLV_COMMAND: - return snd_ctl_tlv_ioctl(ctl, argp, -1); + return snd_ctl_tlv_ioctl(ctl, argp, SNDRV_CTL_TLV_OP_CMD); case SNDRV_CTL_IOCTL_POWER: return -ENOPROTOOPT; case SNDRV_CTL_IOCTL_POWER_STATE: |