From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.62 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794191579; b=w2v0j+8ISdXjW95C9iyHw0ab0opg9OSkXPc4BHFcdFCrO6r5dobCmnmHpRHGbxAxWxIF 2WfdU8KdZ7u24NZ+u1QDqIw7ENGnaZ3B/m7/M3tBcZY6mXgBcfYUnMIvt/yKY88Sk7ffY 6RlHrBniXaLZ2sl5vjiv86VERbN2ZEY+36o8K6wOC/khaOF5DhWclKa1KLWdZw65opnKx iFREKOcohWzya+nR8BBRasWKX7Nqt2tIgGE0WvyxH21ZWkUBoaTEI5y+ZChNf45l9thEl kfXglET9Cfa0DbAlnvcnIr97D8ydPssykKnl8YotI+1K5wLHz4DGRalqt35DGN3TeHw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794191579; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-Id: X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; bh=XIU40uoVM7ZS1m9bivx5oi5SjikaIH2lZA+l0QqMwpU=; b=WHNTl5uDp9E19FVCZFkjl4y2eqpXhfKR3EYxwbXcLQqnhdMq76h8e6bKeEtygqCxbBVr PCLcS16b0mMj3JNo0ukQpklazcJBwgXSho2f6cePQOIeoJI3nvJUnrBeDUJCFHw1/Yb4K i9dwrZ0mfe0epQaOObklM6JFQPrTOlascUBVuY/z5cbm7VI9GufIfwr2Si8zqBgDNPJaq 8Pqp5TGC/+2n5pimi0zKNKkoKjUeDAFHQKzYekLVUlHQODFApMg1FcJiCUmmT+z8ggrkL sECe8qkPq+y44Msx+LpGVmRVLeo8LLi2UwEpNsKHHH/1uzLsN2amvvRpZJznbiQcTEw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=KxQOJYLE; arc=none smtp.remote-ip=91.218.175.62 Received: from mta0.migadu.com (out-62.mta0.migadu.com [91.218.175.62]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 802D6606A323 for ; Mon, 9 Nov 2026 02:32:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 802D6606A323 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=KxQOJYLE X-Envelope-To: stable@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=oBKdXSCyFnTZRor56F5yfiRU9teZqTqvsicnxR2Blz4=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794191576; v=1; x=1794796376; b=KxQOJYLEAgg3JvVaq801Yh4QbBf3uC+5DA/cRS273hRWIx0810NC62vNFezUJZ5Lo/oFOJEU LNgZbYdX8ttoyu+kilnxPBcwvPE0ourSL7dASKI9DQlvGoc+PQ9fzay10SLPQzWr8HEZseeOu3Q uO7orcxPnuM9z/cQkLh5+XG4= X-Envelope-To: stable@vger.kernel.org Received: by mta10.migadu.com with ESMTPS id 8995417d822701fa; Mon, 09 Nov 2026 02:32:56 +0000 X-Mizu-Trace-ID: 8995417d822701fa X-Migadu-Flow: FLOW_OUT From: Yi Cong To: stable@vger.kernel.org Cc: Yi Cong , Felix Fietkau Subject: [PATCH 6.6.y] wifi: mt76: mt792x: fix negative errno truncation in offload capability Date: Mon, 9 Nov 2026 10:32:45 +0800 Message-Id: <20261109023245.51991-1-cong.yi@linux.dev> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20261107053233-failed-6.6-d0115096429c@kernel.org> References: <20261107053233-failed-6.6-d0115096429c@kernel.org> X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Yi Cong Returning a negative errno as u8 turned -ENOENT into 0xfe, wrongly enabling CNM and NAN caps. Return int and default to no caps on error. Fixes: e8a264ccd2de ("wifi: mt76: mt7921: move init shared code in mt792x-lib module") Cc: stable@vger.kernel.org Signed-off-by: Yi Cong Link: https://patch.msgid.link/20260824021429.43761-1-cong.yi@linux.dev Signed-off-by: Felix Fietkau (cherry picked from commit d0115096429ca090a592770c7645f9553a839954) --- drivers/net/wireless/mediatek/mt76/mt792x_core.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_core.c b/drivers/net/wireless/mediatek/mt76/mt792x_core.c index 66806ed4f942..d990e34cfcd2 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt792x_core.c @@ -591,7 +591,7 @@ int mt792x_init_wiphy(struct ieee80211_hw *hw) } EXPORT_SYMBOL_GPL(mt792x_init_wiphy); -static u8 +static int mt792x_get_offload_capability(struct device *dev, const char *fw_wm) { const struct mt76_connac2_fw_trailer *hdr; @@ -653,13 +653,20 @@ mt792x_get_mac80211_ops(struct device *dev, void *drv_data, u8 *fw_features) { struct ieee80211_ops *ops; + int ret; ops = devm_kmemdup(dev, mac80211_ops, sizeof(struct ieee80211_ops), GFP_KERNEL); if (!ops) return NULL; - *fw_features = mt792x_get_offload_capability(dev, drv_data); + ret = mt792x_get_offload_capability(dev, drv_data); + if (ret < 0) { + dev_warn(dev, "failed to read firmware offload caps: %d\n", ret); + *fw_features = 0; + } else { + *fw_features = ret; + } if (!(*fw_features & MT792x_FW_CAP_CNM)) { ops->remain_on_channel = NULL; ops->cancel_remain_on_channel = NULL; -- 2.25.1