nl80211: Fix undefined behavior in bit shift

Shifting signed 32-bit value by 31 bits is undefined.  Changing most
significant bit to unsigned.

Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 6f09d15..fa7ebbc 100644 (file)
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -5314,7 +5314,7 @@ enum nl80211_feature_flags {
        NL80211_FEATURE_TDLS_CHANNEL_SWITCH             = 1 << 28,
        NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR            = 1 << 29,
        NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR      = 1 << 30,
-       NL80211_FEATURE_ND_RANDOM_MAC_ADDR              = 1 << 31,
+       NL80211_FEATURE_ND_RANDOM_MAC_ADDR              = 1U << 31,
 };
 
 /**