ath9k: fix sparse non static symbol warning

Fixes the following sparse warning:

drivers/net/wireless/ath/ath9k/spectral.c:500:24: warning:
 symbol 'rfs_spec_scan_cb' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/spectral.c b/drivers/net/wireless/ath/ath9k/spectral.c
index 11adb5eb51cc..99f4de95c264 100644
--- a/drivers/net/wireless/ath/ath9k/spectral.c
+++ b/drivers/net/wireless/ath/ath9k/spectral.c
@@ -497,7 +497,7 @@ static int remove_buf_file_handler(struct dentry *dentry)
         return 0;
 }
 
-struct rchan_callbacks rfs_spec_scan_cb = {
+static struct rchan_callbacks rfs_spec_scan_cb = {
         .create_buf_file = create_buf_file_handler,
         .remove_buf_file = remove_buf_file_handler,
 };