ALSA: ctl: fix a bug to return no identical information in info operation for userspace controls
In operations of SNDRV_CTL_IOCTL_ELEM_INFO, identical information in
returned value is cleared. This is not better to userspace application.
This commit confirms to return full identical information to the
operations.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/control.c b/sound/core/control.c
index 90a9e5d..a750846 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1040,8 +1040,12 @@
struct snd_ctl_elem_info *uinfo)
{
struct user_element *ue = kcontrol->private_data;
+ unsigned int offset;
+ offset = snd_ctl_get_ioff(kcontrol, &uinfo->id);
*uinfo = ue->info;
+ snd_ctl_build_ioff(&uinfo->id, kcontrol, offset);
+
return 0;
}
@@ -1051,10 +1055,13 @@
struct user_element *ue = kcontrol->private_data;
const char *names;
unsigned int item;
+ unsigned int offset;
item = uinfo->value.enumerated.item;
+ offset = snd_ctl_get_ioff(kcontrol, &uinfo->id);
*uinfo = ue->info;
+ snd_ctl_build_ioff(&uinfo->id, kcontrol, offset);
item = min(item, uinfo->value.enumerated.items - 1);
uinfo->value.enumerated.item = item;