[PATCH] thinkpad_acpi: fix a build error

["Helight.Xu" <helight.xu@gmail.com>]

This patch fixes the following build error:

 Building modules, stage 2.
 MODPOST 1834 modules
ERROR: "snd_card_create" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_notify" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_boolean_mono_info" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_new1" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_card_free" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_card_register" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
ERROR: "snd_ctl_add" [drivers/platform/x86/thinkpad_acpi.ko] undefined!



Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: Helight.Xu <helight.xu@gmail.com>
Tested-by: Helight.Xu 
<helight.xu@gmail.com>                                                    
---
 drivers/platform/x86/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index fc5bf9d..cda6fb6 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -215,6 +215,7 @@ config THINKPAD_ACPI
        depends on ACPI
        depends on INPUT
        depends on RFKILL || RFKILL = n
+       depends on SND
        select BACKLIGHT_LCD_SUPPORT
        select BACKLIGHT_CLASS_DEVICE
        select HWMON
-- 
1.6.5.3

-- 
Zhenwen Xu - Seven Helight
Home Page: http://zhwen.org