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Wed, 21 Oct 2026 00:24:00 -0700 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-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261021_002405_265676_5FB50B37 X-CRM114-Status: GOOD ( 10.61 ) X-Spam-Score: -1.3 (-) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" X-Spam-Status: No, score=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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