Patch "mac80211_hwsim: Use proper TX power" has been added to the 4.9-stable tree

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

mac80211_hwsim: Use proper TX power

to the 4.9-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-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Beni Lev <[email protected]>
Date: Tue, 25 Jul 2017 11:25:25 +0300
Subject: mac80211_hwsim: Use proper TX power

From: Beni Lev <[email protected]>

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.

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

@@ -1357,8 +1357,6 @@ 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 [email protected] are

queue-4.9/mac80211_hwsim-use-proper-tx-power.patch