linux-kernel - [PATCH 4.4 087/113] staging: vt6656: fix sign of rx_dbm to bb_pre_ed

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200227132225.687784502@linuxfoundation.org>
Date:   Thu, 27 Feb 2020 14:36:43 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Malcolm Priestley <tvboxspy@...il.com>
Subject: [PATCH 4.4 087/113] staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi.

From: Malcolm Priestley <tvboxspy@...il.com>

commit 93134df520f23f4e9998c425b8987edca7016817 upstream.

bb_pre_ed_rssi is an u8 rx_dm always returns negative signed
values add minus operator to always yield positive.

fixes issue where rx sensitivity is always set to maximum because
the unsigned numbers were always greater then 100.

Fixes: 63b9907f58f1 ("staging: vt6656: mac80211 conversion: create rx function.")
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Malcolm Priestley <tvboxspy@...il.com>
Link: https://lore.kernel.org/r/aceac98c-6e69-3ce1-dfec-2bf27b980221@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/staging/vt6656/dpc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/vt6656/dpc.c
+++ b/drivers/staging/vt6656/dpc.c
@@ -144,7 +144,7 @@ int vnt_rx_data(struct vnt_private *priv
 
 	vnt_rf_rssi_to_dbm(priv, *rssi, &rx_dbm);
 
-	priv->bb_pre_ed_rssi = (u8)rx_dbm + 1;
+	priv->bb_pre_ed_rssi = (u8)-rx_dbm + 1;
 	priv->current_rssi = priv->bb_pre_ed_rssi;
 
 	frame = skb_data + 8;