From patchwork Sat Dec 3 19:29:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 13063644 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 842EBC4332F for ; Sat, 3 Dec 2022 19:59:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=o+e5JgFVSzaFAhjErXARpJtvL274Xm1EIt7wWw/9bjQ=; b=GrHvNErqhYcKlFtWUZytNl2sPT CS+edX8dGi6rdiboaMo7eys/dQRBke75DxknHVLLWFts2TuLNpS41TFcMbORbPP+PP96F36ZXqsCg kv+66gqDu3NkR75PAG7Jajaajh4Auo5n7UVU7sVvCVEymFnPcrLXQS5+2mGBxCZOnN9rWqOEzZCpC ETZyCd0hJwwrys1lEzCUUJPbUZRGdlTMiauux6kCRWPSJ8H+aUTvlEZWjPk6Vpw9/zYnPxJxdRlH2 XNKGMBzV3g4pNPjtnuWErPIeHnhfyFLQXAsgUCX6Jb2p6JENeMxW86Tv2u2CbL31Qgl9ADudxI/rc uDjleV1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1YfZ-0052ln-Aw; Sat, 03 Dec 2022 19:59:29 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1YfX-0052k6-6e for linux-mediatek@lists.infradead.org; Sat, 03 Dec 2022 19:59:28 +0000 X-UUID: e3afa9326ef345eab35aa3c3d885dd98-20221203 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=o+e5JgFVSzaFAhjErXARpJtvL274Xm1EIt7wWw/9bjQ=; b=iB0OjpiRrEzt+9Hq6FFRoNZlzhF1FgvsyTQwQjgM3WkXEOGBVpNv6zws+6RX5SDA1ZWQD5ccDu3jdVxOr9+kz7gouxPJ8rh5AQUsiIYjvi0pyu7tZHHXmOZ/c7rEaiFGVBTRjJd4njnzWDvPN8h3MdY8gzIlD14X4H+fXbi/0Vc=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.14,REQID:780306aa-33e0-402d-aef3-834457a33758,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:dcaaed0,CLOUDID:e3d90e1f-5e1d-4ab5-ab8e-3e04efc02b30,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: e3afa9326ef345eab35aa3c3d885dd98-20221203 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 748407568; Sat, 03 Dec 2022 12:59:24 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Sun, 4 Dec 2022 03:29:20 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Sun, 4 Dec 2022 03:29:20 +0800 From: Ryder Lee To: Felix Fietkau , CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , Ryder Lee Subject: [PATCH 1/3] wifi: mt76: mt7996: check return value before accessing free_block_num Date: Sun, 4 Dec 2022 03:29:17 +0800 Message-ID: X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221203_115927_278136_4D8F8CDA X-CRM114-Status: GOOD ( 10.75 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Check return value of mt7996_mcu_get_eeprom_free_block() first before accessing free_block_num. Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Ryder Lee --- drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c | 8 +++++--- drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 4 ++-- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c index b9f62bedbc48..b61d12dafc9f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c @@ -66,9 +66,11 @@ static int mt7996_eeprom_load(struct mt7996_dev *dev) u8 free_block_num; u32 block_num, i; - /* TODO: check free block event */ - mt7996_mcu_get_eeprom_free_block(dev, &free_block_num); - /* efuse info not enough */ + ret = mt7996_mcu_get_eeprom_free_block(dev, &free_block_num); + if (ret < 0) + return ret; + + /* efuse info isn't enough */ if (free_block_num >= 59) return -EINVAL; diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index efb245c8ac84..e4ec395426a7 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -2927,8 +2927,8 @@ int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset) bool valid; int ret; - ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_WM_UNI_CMD_QUERY(EFUSE_CTRL), &req, - sizeof(req), true, &skb); + ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_WM_UNI_CMD_QUERY(EFUSE_CTRL), + &req, sizeof(req), true, &skb); if (ret) return ret;