iwinfo: properly cast nl80211 mBm signal levels to reported dBm values (#11161)

SVN-Revision: 31053

package/iwinfo/Makefile

@@ -7,7 +7,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libiwinfo
-PKG_RELEASE:=32
+PKG_RELEASE:=33
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 PKG_CONFIG_DEPENDS := \

package/iwinfo/src/iwinfo_nl80211.c

@@ -1541,7 +1541,8 @@ static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
 
 	if (bss[NL80211_BSS_SIGNAL_MBM])
 	{
-		sl->e->signal = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100;
+		sl->e->signal =
+			(uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
 
 		rssi = sl->e->signal - 0x100;