ALSA: control: Add sanity checks for user ctl id name string
authorTakashi Iwai <tiwai@suse.de>
Wed, 11 Mar 2015 17:12:49 +0000 (18:12 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 26 Mar 2015 14:00:58 +0000 (15:00 +0100)
commit21a7b4f112711eb7443274b3b496254b2fe881fc
tree1fea8a5d7ee6ae649cb8d5ea985c4507eb7cf4a5
parentb81da6c4557194be7e9f7118c08fae0ab607c58a
ALSA: control: Add sanity checks for user ctl id name string

commit be3bb8236db2d0fcd705062ae2e2a9d75131222f upstream.

There was no check about the id string of user control elements, so we
accepted even a control element with an empty string, which is
obviously bogus.  This patch adds more sanity checks of id strings.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/core/control.c