tree 219086f3b031107f9a52d88b4b447b193be58363
parent 74c75c1848b618f6717c1be887ad539ffac2e96d
author Henrique de Moraes Holschuh <hmh@hmh.eng.br> 1261875135 -0200
committer Len Brown <len.brown@intel.com> 1261885055 -0500

thinkpad-acpi: make volume subdriver optional

Allow the user to choose through Kconfig if the Console Audio Control
interface (aka "volume subdriver") should be available or not.

This not only saves some memory, but also allows the thinkpad-acpi
driver to be built-in even if ALSA is modular when the console audio
control interface is not wanted.

This change fixes a build problem that is causing some annoyances, in
a way that doesn't disable the entire driver on kernels without ALSA
support.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Amerigo Wang <amwang@redhat.com>
Cc: Helight Xu <helight.xu@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>