From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 817EC426EAD; Sat, 12 Sep 2026 10:32:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789209149; cv=none; b=nLTA3YSuak3OezZSrxTADXTFNaqCQlSh1bfq5R2YZgSuYdg8w3e8ZwX4xziNvG4oO44eyhZ11uo8gZzX88RCJ2u/Ht2jErFGaXdpxqa3SJd9rHPvinreWDF26NZVXn4ulG3FVTzGthEkBvCUK2NCKjtZkck3M1vQXIfKBwandNM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789209149; c=relaxed/simple; bh=g8RAOHhAIFIN0cbJ7/fVtax4JamuDWlmZjscV+Eb3LQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eeMYQXGS29V3fVY8G5+jo17GrY+sBN10yzd6RMpeSfevc9/rPQfELgAQciQvG6ZiFAo/lOOFrLWIALNDuCaOwzCHdjFQcLvACMNPYgtXKFfHvKpU9HHgLLH4NRacpn+J0xNL2dXXgmC10+YtQ1MH72lGs6gDxZs1kRX3WDp7Z4M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sikBLHn1; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sikBLHn1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 311031F000FF; Sat, 12 Sep 2026 10:32:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789209147; bh=uEfo5ZqtDEtsylY+kgKfRjcOEjwAdyEC9fXkwG5vlI4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=sikBLHn1WqaTCiJmzWKuMplB+IYF/xRD64/0rWa/dXXThuP594NJCJXFG/d9xAgu0 j7UzhWjZY6dV3XFdOlhkkoMVnIuqXbkIq1iJ/PMybusFP8TpPPYVL7u+kBlvR11dGE oufO0oEJ608mlE/gMN8b8ulYYgCBup9w0ZmvGrUc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, StanleyYP Wang , Felix Fietkau , Sasha Levin Subject: [PATCH 6.18 0762/1518] wifi: mt76: mt7996: add missing rdd_idx check when enabling background radar Date: Sat, 12 Sep 2026 08:48:51 +0200 Message-ID: <20260912065640.669719821@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065623.398859879@linuxfoundation.org> References: <20260912065623.398859879@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: StanleyYP Wang [ Upstream commit dbca5c4d29826cecd3185fb1ae2746205ab55127 ] Add the missing rdd idx check (< 0) in mt7996_mcu_rdd_background_enable(). mt7996_get_rdd_idx() returns -1 for phys without 5 GHz support, and the negative index was passed to the RDD MCU command unchecked. Fixes: 1529e335f93d ("wifi: mt76: mt7996: rework radar HWRDD idx") Signed-off-by: StanleyYP Wang Link: https://patch.msgid.link/20260724124813.3961474-13-nbd@nbd.name Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index 95c2a2a5f5bcf..92f8a28cd4a51 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -3735,6 +3735,9 @@ int mt7996_mcu_rdd_background_enable(struct mt7996_phy *phy, struct mt7996_dev *dev = phy->dev; int err, region, rdd_idx = mt7996_get_rdd_idx(phy, true); + if (rdd_idx < 0) + return -EINVAL; + if (!chandef) { /* disable offchain */ err = mt7996_mcu_rdd_cmd(dev, RDD_STOP, rdd_idx, 0); if (err) -- 2.53.0