From patchwork Sat Dec 3 19:29:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 13063645 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 3E343C4332F for ; Sat, 3 Dec 2022 20:20:32 +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: References:In-Reply-To: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:List-Owner; bh=Yt/yPwPuW3hAfnkfu7eCbMYq4Vk2iv+uMPNFflGJg0o=; b=Q3BQQJeZw7UaJSIxtKSdjxEwmc d+ZFnnMvOQB+54t4+nBbAWifeDhqN8A2p4hUZjSXUaWGVlSwiM+B4TP670PWWPRGMLIKsW34l33Ty MSEHWx+Ami9d3OYD8/gzKgW+EkYyPbtoBotVieeqmPr7xjfHxLCDuCbMZ0NhoAkhou9A8QDWlOcXj i3XJI5f7x0B6YZ8SqdaG6LlC+EVA3+/93yc6Squyl/+FBkF926eEGTn4Ekv6VYsR4r9I7r4RlEVn6 NWRhWw4Tir5aUIhZ1OxQJEdHACvcN4LBQm7XSMTcjGpuxwIWbi7fsMVH3SBK2m2gZE3BxK2EvPjn4 zioFENWg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1Yzh-0057WV-RA; Sat, 03 Dec 2022 20:20:17 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1Yze-0057Sq-7g for linux-mediatek@lists.infradead.org; Sat, 03 Dec 2022 20:20:16 +0000 X-UUID: 26e04360595e48728393a8451f6db109-20221203 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=Yt/yPwPuW3hAfnkfu7eCbMYq4Vk2iv+uMPNFflGJg0o=; b=o02GCb2paAaA1PJKkfnZKcZpBMH2M4UizSGD9+v6S33oNM9nAbDea8lJaVHOjw4ZuYitfWrqhi31Ai3gNqz5ge5f5ByOJvvUJaxs0jmixcfPIcTBjkcKoDBtLsV7BjH4dGnoLzzVLdfZLnLT9Yp/430rmhd5+JQoFc9oeWIiQWA=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.14,REQID:979b672f-fc01-43a8-b45c-b24b6ed14070,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:1cfa0e1f-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: 26e04360595e48728393a8451f6db109-20221203 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 90289029; Sat, 03 Dec 2022 13:20:01 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Sun, 4 Dec 2022 03:29:23 +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 03:29:21 +0800 From: Ryder Lee To: Felix Fietkau , CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , Ryder Lee Subject: [PATCH 2/3] wifi: mt76: mt7915: check return value before accessing free_block_num Date: Sun, 4 Dec 2022 03:29:18 +0800 Message-ID: X-Mailer: git-send-email 2.18.0 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221203_122014_306908_2AB1CA3D X-CRM114-Status: GOOD ( 10.30 ) 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 mt7915_mcu_get_eeprom_free_block() first before accessing free_block_num. Fixes: bbc1d4154ec1 ("mt76: mt7915: add default calibrated data support") Signed-off-by: Ryder Lee --- drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c | 7 +++++-- drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 4 ++-- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c index 59069fb86414..3ab07ad0c26e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c @@ -111,8 +111,11 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev) u8 free_block_num; u32 block_num, i; - mt7915_mcu_get_eeprom_free_block(dev, &free_block_num); - /* efuse info not enough */ + ret = mt7915_mcu_get_eeprom_free_block(dev, &free_block_num); + if (ret < 0) + return ret; + + /* efuse info isn't enough */ if (free_block_num >= 29) return -EINVAL; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index ca315af3905b..f9e4c3e80af0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -2792,8 +2792,8 @@ int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset) int ret; u8 *buf; - ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(EFUSE_ACCESS), &req, - sizeof(req), true, &skb); + ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(EFUSE_ACCESS), + &req, sizeof(req), true, &skb); if (ret) return ret;