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From:   Chi-Hsien Lin <chi-hsien.lin@cypress.com>
To:     linux-wireless@vger.kernel.org
Cc:     brcm80211-dev-list@broadcom.com, brcm80211-dev-list@cypress.com,
        Arend van Spriel <arend.vanspriel@broadcom.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Wright Feng <wright.feng@cypress.com>,
        Kalle Valo <kvalo@codeaurora.org>,
        Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Subject: [PATCH V2 1/5] brcmfmac: keep apsta enabled when AP starts with MCHAN feature
Date:   Mon, 27 Apr 2020 01:59:59 -0500
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From: Wright Feng <wright.feng@cypress.com>

When starting station mode on wlan0 and AP mode on wlan1, the apsta will
be disabled and cause data stall on wlan0(station). The apsta feature
with MCHAN(Multi-Channel Concurrent) or RSDB(Real Simultaneous
Dual-Band) can make STA+AP work on two bands concurrently.
Because of that, we keep apsta enabled if firmware supports MCHAN or
RSDB features

Signed-off-by: Wright Feng <wright.feng@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index fa846471dac2..e54f6fa6dc8f 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -4727,7 +4727,8 @@ brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev,
 
 		if ((dev_role == NL80211_IFTYPE_AP) &&
 		    ((ifp->ifidx == 0) ||
-		     !brcmf_feat_is_enabled(ifp, BRCMF_FEAT_RSDB))) {
+		     (!brcmf_feat_is_enabled(ifp, BRCMF_FEAT_RSDB) &&
+		      !brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MCHAN)))) {
 			err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
 			if (err < 0) {
 				bphy_err(drvr, "BRCMF_C_DOWN error %d\n",
-- 
2.1.0