tree b3557bdba22cc546c70a7f8df2f20b19b18f3912
parent 4ed56666b7fc98c750a23b5263350b75e742b534
author Takashi Sakamoto <o-takashi@sakamocchi.jp> 1425993211 +0900
committer Takashi Iwai <tiwai@suse.de> 1425997799 +0100

ALSA: core: reduce stack usage related to snd_ctl_new()

The callers of snd_ctl_new() need to have 'struct snd_kcontrol' data,
and pass the data as template. Then, the function allocates the structure
data again and copy from the template. This is a waste of resources.
Especially, the callers use large stack for the template.

This commit removes a need of template for the function, thus, changes
the prototype of snd_ctl_new(). Furthermore, this commit changes
the code of callers, snd_ctl_new1() and snd_ctl_elem_add() for better
shape.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>