The sparse tool complains as follows:
drivers/acpi/prmt.c:53:1: warning:
 symbol 'prm_module_list' was not declared. Should it be static?
This symbol is not used outside of prmt.c, so marks it static.
Fixes: cefc7ca46235 ("ACPI: PRM: implement OperationRegion handler for the PlatformRtMechanism subtype")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 #pragma pack()
 
 
-LIST_HEAD(prm_module_list);
+static LIST_HEAD(prm_module_list);
 
 struct prm_handler_info {
        guid_t guid;