kernel/linux.git/drivers/net/wireless/mediatek, branch v6.1.168

wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211()

2026-03-25T10:03:01+00:00

[ Upstream commit 4e10a730d1b511ff49723371ed6d694dd1b2c785 ] Check frame length before accessing the mgmt fields in mt76_connac2_mac_write_txwi_80211 in order to avoid a possible oob access. Fixes: 577dbc6c656d ("mt76: mt7915: enable offloading of sequence number assignment") Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260226-mt76-addba-req-oob-access-v1-3-b0f6d1ad4850@kernel.org [fix check to also cover mgmt->u.action.u.addba_req.capab, correct Fixes tag] Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: mt76: Fix DTS power-limits on little endian systems

2026-01-11T14:19:16+00:00

[ Upstream commit 38b845e1f9e810869b0a0b69f202b877b7b7fb12 ] The power-limits for ru and mcs and stored in the devicetree as bytewise array (often with sizes which are not a multiple of 4). These arrays have a prefix which defines for how many modes a line is applied. This prefix is also only a byte - but the code still tried to fix the endianness of this byte with a be32 operation. As result, loading was mostly failing or was sending completely unexpected values to the firmware. Since the other rates are also stored in the devicetree as bytewise arrays, just drop the u32 access + be32_to_cpu conversion and directly access them as bytes arrays. Cc: stable@vger.kernel.org Fixes: 22b980badc0f ("mt76: add functions for parsing rate power limits from DT") Fixes: a9627d992b5e ("mt76: extend DT rate power limits to support 11ax devices") Signed-off-by: Sven Eckelmann (Plasma Cloud) Signed-off-by: Felix Fietkau [ Adjust context ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add()

2026-01-11T14:18:29+00:00

[ Upstream commit 53d1548612670aa8b5d89745116cc33d9d172863 ] In mt7615_mcu_wtbl_sta_add(), an skb sskb is allocated. If the subsequent call to mt76_connac_mcu_alloc_wtbl_req() fails, the function returns an error without freeing sskb, leading to a memory leak. Fix this by calling dev_kfree_skb() on sskb in the error handling path to ensure it is properly released. Fixes: 99c457d902cf9 ("mt76: mt7615: move mt7615_mcu_set_bmc to mt7615_mcu_ops") Signed-off-by: Zilin Guan Acked-by: Lorenzo Bianconi Link: https://patch.msgid.link/20251113062415.103611-1-zilin@seu.edu.cn Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: mt7921: Add 160MHz beamformee capability for mt7922 device

2025-12-06T21:12:24+00:00

[ Upstream commit 25ef5b5d02ac03fe8dd91cf25bd011a570fbeba2 ] Enable 160MHz beamformee support on mt7922 by updating HE capability element configuration. Previously, only 160MHz channel width was set, but beamformee for 160MHz was not properly advertised. This patch adds BEAMFORMEE_MAX_STS_ABOVE_80MHZ_4 capability to allow devices to utilize 160MHz BW for beamforming. Tested by connecting to 160MHz-bandwidth beamforming AP and verified HE capability. Signed-off-by: Quan Zhou Link: https://patch.msgid.link/ae637afaffed387018fdc43709470ef65898ff0b.1756383627.git.quan.zhou@mediatek.com Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: fix potential memory leak in mt76_wmac_probe()

2025-10-15T09:56:34+00:00

[ Upstream commit 42754b7de2b1a2cf116c5e3f1e8e78392f4ed700 ] In mt76_wmac_probe(), when the mt76_alloc_device() call succeeds, memory is allocated for both struct ieee80211_hw and a workqueue. However, on the error path, the workqueue is not freed. Fix that by calling mt76_free_device() on the error path. Fixes: c8846e101502 ("mt76: add driver for MT7603E and MT7628/7688") Signed-off-by: Abdun Nihaal Reviewed-by: Jiri Slaby Link: https://patch.msgid.link/20250709145532.41246-1-abdun.nihaal@gmail.com Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: mt7921: add 160 MHz AP for mt7922 device

2025-06-27T10:07:33+00:00

[ Upstream commit 7011faebe543f8f094fdb3281d0ec9e1eab81309 ] This allows mt7922 in hostapd mode to transmit up to 1.4 Gbps. Signed-off-by: Samuel Williams Link: https://patch.msgid.link/20250511005316.1118961-1-sam8641@gmail.com Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: mt76x2: Add support for LiteOn WN4516R,WN4519R

2025-06-27T10:07:33+00:00

[ Upstream commit 3c0e4f606d8693795a2c965d6f4987b1bfc31097 ] Adds support for: - LiteOn WN4516R - LiteOn WN4519R Both use: - A nonstandard USB connector - Mediatek chipset MT7600U - ASIC revision: 76320044 Disabled VHT support on ASIC revision 76320044: This fixes the 5G connectibity issue on LiteOn WN4519R module see https://github.com/openwrt/mt76/issues/971 And may also fix the 5G issues on the XBox One Wireless Adapter see https://github.com/openwrt/mt76/issues/200 I have looked at the FCC info related to the MT7632U chip as mentioned in here: https://github.com/openwrt/mt76/issues/459 These confirm the chipset does not support 'ac' mode and hence VHT should be turned of. Signed-off-by: Henk Vergonet Acked-by: Lorenzo Bianconi Link: https://patch.msgid.link/20250418143914.31384-1-henk.vergonet@gmail.com Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: disable napi on driver removal

2025-05-22T12:10:06+00:00

commit 78ab4be549533432d97ea8989d2f00b508fa68d8 upstream. A warning on driver removal started occurring after commit 9dd05df8403b ("net: warn if NAPI instance wasn't shut down"). Disable tx napi before deleting it in mt76_dma_cleanup(). WARNING: CPU: 4 PID: 18828 at net/core/dev.c:7288 __netif_napi_del_locked+0xf0/0x100 CPU: 4 UID: 0 PID: 18828 Comm: modprobe Not tainted 6.15.0-rc4 #4 PREEMPT(lazy) Hardware name: ASUS System Product Name/PRIME X670E-PRO WIFI, BIOS 3035 09/05/2024 RIP: 0010:__netif_napi_del_locked+0xf0/0x100 Call Trace: mt76_dma_cleanup+0x54/0x2f0 [mt76] mt7921_pci_remove+0xd5/0x190 [mt7921e] pci_device_remove+0x47/0xc0 device_release_driver_internal+0x19e/0x200 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xb0 __do_sys_delete_module.isra.0+0x197/0x2e0 do_syscall_64+0x7b/0x160 entry_SYSCALL_64_after_hwframe+0x76/0x7e Tested with mt7921e but the same pattern can be actually applied to other mt76 drivers calling mt76_dma_cleanup() during removal. Tx napi is enabled in their *_dma_init() functions and only toggled off and on again inside their suspend/resume/reset paths. So it should be okay to disable tx napi in such a generic way. Found by Linux Verification Center (linuxtesting.org). Fixes: 2ac515a5d74f ("mt76: mt76x02: use napi polling for tx cleanup") Cc: stable@vger.kernel.org Signed-off-by: Fedor Pchelkin Tested-by: Ming Yen Hsieh Link: https://patch.msgid.link/20250506115540.19045-1-pchelkin@ispras.ru Signed-off-by: Felix Fietkau Signed-off-by: Greg Kroah-Hartman

wifi: mt76: Add check for devm_kstrdup()

2025-04-25T08:43:39+00:00

commit 4bc1da524b502999da28d287de4286c986a1af57 upstream. Add check for the return value of devm_kstrdup() in mt76_get_of_data_from_mtd() to catch potential exception. Fixes: e7a6a044f9b9 ("mt76: testmode: move mtd part to mt76_dev") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li Link: https://patch.msgid.link/20250219033645.2594753-1-haoxiang_li2024@163.com Signed-off-by: Felix Fietkau Signed-off-by: Greg Kroah-Hartman

wifi: mt76: mt76x2u: add TP-Link TL-WDN6200 ID to device table

2025-04-25T08:43:31+00:00

[ Upstream commit 06cccc2ebbe6c8a20f714f3a0ff3ff489d3004bb ] The TP-Link TL-WDN6200 "Driverless" version cards use a MT7612U chipset. Add the USB ID to mt76x2u driver. Signed-off-by: Icenowy Zheng Link: https://patch.msgid.link/20250317102235.1421726-1-uwu@icenowy.me Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin