From nobody Fri Sep 25 06:46:56 2026 Received: from mail.systemli.org (mail1.systemli.org [93.190.126.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0942637E5E9; Tue, 15 Sep 2026 19:51:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=93.190.126.36 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789501891; cv=none; b=QW+VjxmNRvoR5h4DiXyUe7mlM4SyQjEyvJfoJOCmsLwZtxy20r32iy45vbso7yzCRXvqeLZr8JNOVKjDwG2STH+jbk3wY/JjgIwtWNOakR1IxY9oytyHIg39rTlgaNKKMDDUpXDkz5RzOGoZJQhXDtI3SvrsEQMRVP0/VInA8CM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789501891; c=relaxed/simple; bh=/LzEA/vfK9gBlWZYzjnqlgIBNIC6LZn4m26JyPUQNw4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=g7OGznVVKZ6nuCTVma2EGNNDq3QKY5GW+kl9RNhUZdvPxF2XQCzIftWSADZGiUULYqs6H1zX/hN7WDr+JXRrQoBZmU289O4crmemMa7IHO7Zvdnf7rnwwyCPtrZLhKCxDhn7tWVmn8ECPCO5yHG+qWDLl2DEnGthwugR9cuWOWY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=systemli.org; spf=pass smtp.mailfrom=systemli.org; dkim=pass (2048-bit key) header.d=systemli.org header.i=@systemli.org header.b=pPYmGx7b; arc=none smtp.client-ip=93.190.126.36 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=systemli.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=systemli.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=systemli.org header.i=@systemli.org header.b="pPYmGx7b" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=systemli.org; s=default; t=1789501446; bh=VgOKdKh1SL/E+wcXifPjZ8hXUr7i0WUXSAq45A/JBs8=; h=From:To:Cc:Subject:Date:From; b=pPYmGx7b9KiXmZJ6El4YMx7he/Y0JNr0X/4xicQHrRwEm6NtdDs1Zyq5mgqdMY3Na lJC+qSD9dp6VIOf26R6aIzKnkXo0Aebyh3dtS+mZyLY7PuTsigUQKRqwy5BL4LJvYC g1RhBg/SG3/fc6Rq0/Dsg5Jw70rURVyeoW+Wx2QM4Tf1ZJVzC44GNtiM6+ySxITmIi UUV9J71u65rJAwhtc44Hr9cMIgj8NvVmoXwi9GZXfwhHLR/wTDItLMN01Rwc3yUyqf STkxghHNsZZ5JEhzs1XIzNBIHJf2s6/V5tPYWhFTQ3/CRdRzxDDKL+nRaP+RUALqJo WSgnEHoQD1+1Q== From: Nick Hainke To: linux-wireless@vger.kernel.org Cc: Nick Hainke , =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= , linux-kernel@vger.kernel.org Subject: [PATCH] wifi: ath9k: restore background spectral scan after reset Date: Tue, 15 Sep 2026 21:43:27 +0200 Message-ID: <20260915194327.30397-1-vincent@systemli.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" A reset leaves spectral_mode set to SPECTRAL_BACKGROUND, but resets the spectral registers and receive filter. The driver therefore still reports a background scan even though the hardware no longer produces FFT samples. Re-trigger background spectral scanning after reset recovery so the software and hardware state match again. Do not re-trigger spectral scanning in disabled, manual, channel-scan, radar, or off-channel modes. Assisted-by: Claude:opus-5 Signed-off-by: Nick Hainke --- drivers/net/wireless/ath/ath9k/main.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/a= th/ath9k/main.c index 740a6fc7b067..00e587fe6ee3 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -231,6 +231,17 @@ static bool ath_prepare_reset(struct ath_softc *sc) return ret; } =20 +static void ath_restore_spectral_scan(struct ath_softc *sc, bool start) +{ + struct ath_common *common =3D ath9k_hw_common(sc->sc_ah); + + if (!start || sc->cur_chan->offchannel || sc->hw->conf.radar_enabled || + sc->spec_priv.spectral_mode !=3D SPECTRAL_BACKGROUND) + return; + + ath9k_cmn_spectral_scan_trigger(common, &sc->spec_priv); +} + static bool ath_complete_reset(struct ath_softc *sc, bool start) { struct ath_hw *ah =3D sc->sc_ah; @@ -269,6 +280,7 @@ static bool ath_complete_reset(struct ath_softc *sc, bo= ol start) ath_restart_work(sc); ath_txq_schedule_all(sc); } + ath_restore_spectral_scan(sc, start); =20 sc->gtt_cnt =3D 0; =20 --=20 2.55.0