[PATCH 11/22] net: thunder_bgx: avoid format string overflow warning

[Arnd Bergmann]

gcc warns that the temporary buffer might be too small here:

drivers/net/ethernet/cavium/thunder/thunder_bgx.c: In function 'bgx_probe':
drivers/net/ethernet/cavium/thunder/thunder_bgx.c:1020:16: error: '%d' 
directive writing between 1 and 10 bytes into a region of size between 9 and 11 
[-Werror=format-overflow=]
sprintf(str, "BGX%d LMAC%d mode", bgx->bgx_id, lmacid);
             ^~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/cavium/thunder/thunder_bgx.c:1020:16: note: directive 
argument in the range [0, 2147483647]
drivers/net/ethernet/cavium/thunder/thunder_bgx.c:1020:3: note: 'sprintf' 
output between 16 and 27 bytes into a destination of size 20

This probably can't happen, but it can't hurt to make it long
enough for the theoretical limit.

Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
 drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c 
b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index a0ca68ce3fbb..79112563a25a 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -1008,7 +1008,7 @@ static void bgx_print_qlm_mode(struct bgx *bgx, u8 lmacid)
 {
        struct device *dev = &bgx->pdev->dev;
        struct lmac *lmac;
-       char str[20];
+       char str[27];
 
        if (!bgx->is_dlm && lmacid)
                return;
-- 
2.9.0