iw: scan: fix undefined behaviour in rm capa print

Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20200209165902.44110-8-markus.theil@tu-ilmenau.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/scan.c b/scan.c
index fd49038e62f4c43ce13b4449da1e7cc89563a382..2b8f62be7d71a61ecbbd731263c486b4177614c6 100644 (file)
--- a/scan.c
+++ b/scan.c
@@ -586,10 +586,10 @@ static void print_rm_enabled_capabilities(const uint8_t type, uint8_t len,
                            const uint8_t *data,
                            const struct print_ies_data *ie_buffer)
 {
-       __u64 capa = data[0] |
-                    data[1] << 8 |
-                    data[2] << 16 |
-                    data[3] << 24 |
+       __u64 capa = ((__u64) data[0]) |
+                    ((__u64) data[1]) << 8 |
+                    ((__u64) data[2]) << 16 |
+                    ((__u64) data[3]) << 24 |
                     ((__u64) data[4]) << 32;
 
        printf("\n");