[RFC PATCH linux-next] powercap/drivers/dtpm: dtpm_node_callback[] can be static

[kernel test robot <lkp@xxxxxxxxx>]

drivers/powercap/dtpm.c:525:22: warning: symbol 'dtpm_node_callback' was not declared. Should it be static?

Fixes: 3759ec678e89 ("powercap/drivers/dtpm: Add hierarchy creation")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: kernel test robot <lkp@xxxxxxxxx>
---
 drivers/powercap/dtpm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/powercap/dtpm.c b/drivers/powercap/dtpm.c
index 414826a1509b6..6d890d8cf9169 100644
--- a/drivers/powercap/dtpm.c
+++ b/drivers/powercap/dtpm.c
@@ -522,7 +522,7 @@ static struct dtpm *dtpm_setup_dt(const struct dtpm_node *hierarchy,
 
 typedef struct dtpm * (*dtpm_node_callback_t)(const struct dtpm_node *, struct dtpm *);
 
-dtpm_node_callback_t dtpm_node_callback[] = {
+static dtpm_node_callback_t dtpm_node_callback[] = {
 	[DTPM_NODE_VIRTUAL] = dtpm_setup_virtual,
 	[DTPM_NODE_DT] = dtpm_setup_dt,
 };