diff mbox series

[2/5] ath9k: Clear key cache explicitly on disabling hardware

Message ID 20201214172118.18100-3-jouni@codeaurora.org (mailing list archive)
State Accepted
Commit 73488cb2fa3bb1ef9f6cf0d757f76958bd4deaca
Delegated to: Kalle Valo
Headers show
Series ath9k: Safer key deletion to avoid unexpected behavior | expand

Commit Message

Jouni Malinen Dec. 14, 2020, 5:21 p.m. UTC 
Now that ath/key.c may not be explicitly clearing keys from the key
cache, clear all key cache entries when disabling hardware to make sure
no keys are left behind beyond this point.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---
 drivers/net/wireless/ath/ath9k/main.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index caebe3fd6869..10b87aa1d289 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -894,6 +894,11 @@  static void ath9k_stop(struct ieee80211_hw *hw)
 
 	spin_unlock_bh(&sc->sc_pcu_lock);
 
+	/* Clear key cache entries explicitly to get rid of any potentially
+	 * remaining keys.
+	 */
+	ath9k_cmn_init_crypto(sc->sc_ah);
+
 	ath9k_ps_restore(sc);
 
 	sc->ps_idle = prev_idle;