staging: rtl8192e: Fix compiler warning truncated writing of iwe.u.name

iwe.u.name and proto_name have both 16 bytes of space. But when writing
to iwe.u.name the first 10 bytes are used by the fixed string
"IEEE802.11". Evaluating the code shows that only the following strings
can occur in proto_name: "N-24G", "g", "b", "bg". Therefore it is
sufficient to shorten proto_name to 6 bytes.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202309171733.Gl96cmYd-lkp@intel.com/
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/2caafb8628880570725385e87150c47689474fc4.1695054044.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8192e/rtllib_wx.c b/drivers/staging/rtl8192e/rtllib_wx.c
index e9469bfef3ddee1c5ef57fb65beee536bfad9d0f..a37250de7ba37cde14cf53a1a27142d96fcbb685 100644 (file)
--- a/drivers/staging/rtl8192e/rtllib_wx.c
+++ b/drivers/staging/rtl8192e/rtllib_wx.c
@@ -29,7 +29,7 @@ static inline char *rtl819x_translate_scan(struct rtllib_device *ieee,
                                           struct iw_request_info *info)
 {
        char custom[MAX_CUSTOM_LEN];
-       char proto_name[IFNAMSIZ];
+       char proto_name[6];
        char *pname = proto_name;
        char *p;
        struct iw_event iwe;