linux-kernel - [PATCH 5.15 08/12] Revert "wcn36xx: Disable bmps when encryption is disabled"

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Date:   Thu,  4 Nov 2021 15:12:34 +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,
        Bryan ODonoghue <bryan.odonoghue@...aro.org>,
        Kalle Valo <kvalo@...eaurora.org>
Subject: [PATCH 5.15 08/12] Revert "wcn36xx: Disable bmps when encryption is disabled"

From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>

commit 285bb1738e196507bf985574d0bc1e9dd72d46b1 upstream.

This reverts commit c6522a5076e1a65877c51cfee313a74ef61cabf8.

Testing on tip-of-tree shows that this is working now. Revert this and
re-enable BMPS for Open APs.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Link: https://lore.kernel.org/r/20211022140447.2846248-3-bryan.odonoghue@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/wireless/ath/wcn36xx/main.c    |   10 ----------
 drivers/net/wireless/ath/wcn36xx/pmc.c     |    5 +----
 drivers/net/wireless/ath/wcn36xx/wcn36xx.h |    1 -
 3 files changed, 1 insertion(+), 15 deletions(-)

--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -604,15 +604,6 @@ static int wcn36xx_set_key(struct ieee80
 				}
 			}
 		}
-		/* FIXME: Only enable bmps support when encryption is enabled.
-		 * For any reasons, when connected to open/no-security BSS,
-		 * the wcn36xx controller in bmps mode does not forward
-		 * 'wake-up' beacons despite AP sends DTIM with station AID.
-		 * It could be due to a firmware issue or to the way driver
-		 * configure the station.
-		 */
-		if (vif->type == NL80211_IFTYPE_STATION)
-			vif_priv->allow_bmps = true;
 		break;
 	case DISABLE_KEY:
 		if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
@@ -913,7 +904,6 @@ static void wcn36xx_bss_info_changed(str
 				    vif->addr,
 				    bss_conf->aid);
 			vif_priv->sta_assoc = false;
-			vif_priv->allow_bmps = false;
 			wcn36xx_smd_set_link_st(wcn,
 						bss_conf->bssid,
 						vif->addr,
--- a/drivers/net/wireless/ath/wcn36xx/pmc.c
+++ b/drivers/net/wireless/ath/wcn36xx/pmc.c
@@ -23,10 +23,7 @@ int wcn36xx_pmc_enter_bmps_state(struct
 {
 	int ret = 0;
 	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
-
-	if (!vif_priv->allow_bmps)
-		return -ENOTSUPP;
-
+	/* TODO: Make sure the TX chain clean */
 	ret = wcn36xx_smd_enter_bmps(wcn, vif);
 	if (!ret) {
 		wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n");
--- a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
+++ b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
@@ -128,7 +128,6 @@ struct wcn36xx_vif {
 	enum wcn36xx_hal_bss_type bss_type;
 
 	/* Power management */
-	bool allow_bmps;
 	enum wcn36xx_power_state pw_state;
 
 	u8 bss_index;