Patch "mac80211_hwsim: Use proper TX power" has been added to the 4.13-stable tree

Patch "mac80211_hwsim: Use proper TX power" has been added to the 4.13-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    mac80211_hwsim: Use proper TX power

to the 4.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mac80211_hwsim-use-proper-tx-power.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 9de981f507474f326e42117858dc9a9321331ae5 Mon Sep 17 00:00:00 2001
From: Beni Lev <beni.lev@intel.com>
Date: Tue, 25 Jul 2017 11:25:25 +0300
Subject: mac80211_hwsim: Use proper TX power

From: Beni Lev <beni.lev@intel.com>

commit 9de981f507474f326e42117858dc9a9321331ae5 upstream.

In struct ieee80211_tx_info, control.vif pointer and rate_driver_data[0]
falls on the same place, depending on the union usage.
During the whole TX process, the union is referred to as a control struct,
which holds the vif that is later used in the tx flow, especially in order
to derive the used tx power.
Referring direcly to rate_driver_data[0] and assigning a value to it,
overwrites the vif pointer, hence making all later references irrelevant.
Moreover, rate_driver_data[0] isn't used later in the flow in order to
retrieve the channel that it is pointing to.

Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/mac80211_hwsim.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1362,8 +1362,6 @@ static void mac80211_hwsim_tx(struct iee
 				       txi->control.rates,
 				       ARRAY_SIZE(txi->control.rates));
 
-	txi->rate_driver_data[0] = channel;
-
 	if (skb->len >= 24 + 8 &&
 	    ieee80211_is_probe_resp(hdr->frame_control)) {
 		/* fake header transmission time */


Patches currently in stable-queue which might be from beni.lev@intel.com are

queue-4.13/mac80211_hwsim-use-proper-tx-power.patch