[RFC PATCH] libata: ata_bus_type can be static

[kernel test robot <lkp@xxxxxxxxx>]

drivers/ata/libata-transport.c:88:17: warning: symbol 'ata_bus_type' was not declared. Should it be static?

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: kernel test robot <lkp@xxxxxxxxx>
---
 drivers/ata/libata-transport.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c
index e5ed5046b299e2..b9412d1fe3e083 100644
--- a/drivers/ata/libata-transport.c
+++ b/drivers/ata/libata-transport.c
@@ -85,7 +85,7 @@ struct ata_internal {
 static int ata_tdev_add(struct ata_device *dev);
 static void ata_tdev_delete(struct ata_device *dev);
 
-struct bus_type ata_bus_type = {
+static struct bus_type ata_bus_type = {
         .name		= "ata",
 };