In commit bff431e49ff531a343fbb2b4426e313000844f32 ("ACPI: WMI: Add
ACPI-WMI mapping driver") this mutex was added, but the rest of the
final commit never actually made use of it, resulting in:
In file included from include/linux/mutex.h:29:0,
from include/linux/kernfs.h:13,
from include/linux/sysfs.h:15,
from include/linux/kobject.h:21,
from include/linux/device.h:17,
from drivers/platform/x86/wmi.c:35:
drivers/platform/x86/wmi.c:48:21: warning: ‘wmi_data_lock’ defined but not used [-Wunused-variable]
static DEFINE_MUTEX(wmi_data_lock);
^
A git grep shows no other instances/references to the wmi_data_lock.
Delete it, assuming that the mutex addition was just a leftover from
an earlier work in progress version of the change, since the original
dates from 2008.
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
---
drivers/platform/x86/wmi.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 737e56d46f61..26a0bd893b86 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -45,7 +45,6 @@ MODULE_LICENSE("GPL");
#define ACPI_WMI_CLASS "wmi"
-static DEFINE_MUTEX(wmi_data_lock);
static LIST_HEAD(wmi_block_list);
struct guid_block {
--
2.2.1
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