[PATCH] thinkpad_acpi: Define _sta() only when there are callsites

[Johannes Weiner <hannes@saeurebad.de>]

With configs where neither the dock nor the bay subdriver is enabled,
_sta() is defined but never used.  Define it conditionally.

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
---
 drivers/misc/thinkpad_acpi.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index cf56647..d5ac8b7 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -293,6 +293,7 @@ static int acpi_ec_write(int i, u8 v)
 	return 1;
 }
 
+#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_DOCK)
 static int _sta(acpi_handle handle)
 {
 	int status;
@@ -302,6 +303,7 @@ static int _sta(acpi_handle handle)
 
 	return status;
 }
+#endif
 
 static int issue_thinkpad_cmos_command(int cmos_cmd)
 {
-- 
1.5.3.8