linux-kernel - [PATCH] staging: wfx: fix scan with WFM200 and WW regulation

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Date:   Fri, 18 Feb 2022 11:53:58 +0100
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        Kalle Valo <kvalo@...eaurora.org>
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S . Miller" <davem@...emloft.net>,
        Riccardo Ferrazzo <rferrazzo@...e.com>,
        Jérôme Pouiller 
        <jerome.pouiller@...abs.com>
Subject: [PATCH] staging: wfx: fix scan with WFM200 and WW regulation

From: Riccardo Ferrazzo <rferrazzo@...e.com>

Some variants of the WF200 disallow active scan on channel 12 and 13.
For these parts, the channels 12 and 13 are marked IEEE80211_CHAN_NO_IR.

However, the beacon hint procedure was removing the flag
IEEE80211_CHAN_NO_IR from channels where a BSS is discovered. This was
making subsequent scans to fail because the driver was trying active
scans on prohibited channels.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/wfx/main.c b/drivers/staging/wfx/main.c
index d832a22850c7..5999e81dc44d 100644
--- a/drivers/staging/wfx/main.c
+++ b/drivers/staging/wfx/main.c
@@ -381,6 +381,7 @@ int wfx_probe(struct wfx_dev *wdev)
 	}
 
 	if (wdev->hw_caps.region_sel_mode) {
+		wdev->hw->wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS;
 		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[11].flags |=
 			IEEE80211_CHAN_NO_IR;
 		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[12].flags |=
-- 
2.34.1