From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=60.244.123.138 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792567457; b=zGS5Arw9+tHh2wgqAf+6n/pfCj1tx7pz9dt3+dWv6R5utFmLu9914OIeLA8tqLiC3pqS QcGWa88bLE8F5lmq5scGFKy9p//OrxDj8+A6qgqO36sgF3GdytYvpYXLHYMiAxfzaqh0W jkS9KiOBdr79li0hRiXLHp4DNohM73KA03brgJexBBFBVYZ0IYz26pDraEOpCO5ef3Awu Ler/hfEm0aDx0E5anUHUgOENmgMtje9WfA6QRjkuMrSrw2/hmb7AdvLsmL0+UaSGRY4R3 bDsumNsEimW2b+I6Y3a/jT6fzzBWbn09UaRoSrUjplrEhLiRVhe2/bvH4ao6b3DASgg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792567457; h=DMARC-Filter:X-UUID:DKIM-Signature:X-CID-P-RULE:X-CID-O-INFO: X-CID-META:X-CID-BVR:X-CID-BAS:X-CID-FACTOR:X-CID-RHF:X-UUID:Received: Received:Received:From:To:CC:Subject:Date:Message-ID:X-Mailer: MIME-Version:Content-Transfer-Encoding:Content-Type; bh=B4w3VfD1CsFEPvf0JUg0GejZencD2dFWVaSgkTbJa0U=; b=zQpQhwtrqFzT+HgGKSgAE6Woif/YRc4DpJHbUpYXzIDu9hbpam8JrLlSKYgtrFoVRDEb U7XW8Q0DHmuYudMSfeWq55UApaA34Av1SkkUsfwhRLUOmMiZL0c7nbHmRLENCQGByJ/6N yx8m3Z0/vYmDWwEfcFtsXI39gK+FvWDIjc0t1l/yObRoRClwPBSELzVD9P5r5+5s2Zyoc bjaN/fJD/ZLFY8IcQYkN/WB82PplZ50E50+oxt90D3s9GbpwzVpwKGGD7AfL6SOOyChzx LYRusDpwylSzC1vHgMrz2vaue1WJVPmF6bvwB65UZjMADW4RJaLV/Qo1YZ+QjnZm5cA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; arc=none smtp.remote-ip=60.244.123.138 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E246B606A31D; Wed, 21 Oct 2026 07:24:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org E246B606A31D Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com X-UUID: 61cd7bf6cd2011f1b1788b6acf885367-20261021 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=B4w3VfD1CsFEPvf0JUg0GejZencD2dFWVaSgkTbJa0U=; b=Y6h6g1x2k0n4BMN8z1Ot9mPwjAaLx4FI+bSqUtJnzZXWQ7zNBWDx15MDySbODF2dDALUePxsOrGjnf2n95fbooUwu91I7HQTjmQKBhdAFbMDbQ2vbXTZjuqTYaGJZN+Hjfj/mpsAn7kyuEXRhSHtEpZgyiuAJEtHT6/sfHhPsKw=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.20,REQID:725e6a1c-a660-4f5e-b788-82e93af6d6e5,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:291e20b,CLOUDID:8d77e38a-9b15-4dfd-88b6-b4385d95ae05,B ulkID:nil,BulkQuantity:0,SF:102|836|865|888|898,TC:-5,Content:0|15|50|99,E DM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0,OSI:0,OSA:0, AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: 61cd7bf6cd2011f1b1788b6acf885367-20261021 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1308916624; Wed, 21 Oct 2026 15:23:58 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) 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 15.2.2562.29; Wed, 21 Oct 2026 15:23:57 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Wed, 21 Oct 2026 15:23:57 +0800 From: Chris Lu To: Marcel Holtmann , Johan Hedberg , Luiz Von Dentz CC: Hao Qin , Wenlong Tian , Sean Wang , Will Lee , SS Wu , linux-bluetooth , linux-kernel , linux-mediatek , Chris Lu Subject: [PATCH v3 0/3] Bluetooth: btmtk: fix ISO data reception Date: Wed, 21 Oct 2026 15:23:52 +0800 Message-ID: <20261021072356.1449539-1-chris.lu@mediatek.com> X-Mailer: git-send-email 2.45.2 X-Mailing-List: linux-kernel@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 Content-Type: text/plain Two fixes for btmtk_recv_isopkt(), found while debugging LE Audio on MT7925, plus an update to the ISO data transmission setting. The function is shared by every MediaTek USB controller that supports ISO data, so none of this is specific to that part. Patch 1 drops the zero padding that the ISO interrupt IN endpoint appends to each transfer instead of parsing it as ISO packets. Patch 2 bounds Data_Total_Length by hdev->iso_mtu. Patch 3 updates the mt79xx ISO data transmission setting. The three hunks do not overlap, so any prefix of the series applies on its own. Changes in v3: - Patch 1: instead of dropping a packet solely because Data_Total_Length is zero, also confirm that the rest of the transfer is zero-filled before treating it as padding. - Patch 2, 3: unchanged. Changes in v2: - Patch 2 reworked and retitled. - Patch 3 added. Based on bluetooth-next. Chris Lu (3): Bluetooth: btmtk: drop zero-length ISO packets from endpoint padding Bluetooth: btmtk: bound the ISO payload length by the controller's MTU Bluetooth: btmtk: derive the firmware ISO setting from MTK_ISO_THRESHOLD drivers/bluetooth/btmtk.c | 44 ++++++++++++++++++++++++++++++++++----- 1 file changed, 39 insertions(+), 5 deletions(-) -- 2.45.2