[PATCH -next] brd: make symbol rd_size static

[Wei Yongjun]

From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

Fixes the following sparse warning:

drivers/block/brd.c:411:15: warning:
 symbol 'rd_size' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/block/brd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index ad793f3..d1edf42 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -408,7 +408,7 @@ static int rd_nr = CONFIG_BLK_DEV_RAM_COUNT;
 module_param(rd_nr, int, S_IRUGO);
 MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices");
 
-unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
+static unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
 module_param(rd_size, ulong, S_IRUGO);
 MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");