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([2600:4041:5b0d:f100:fec2:7085:7ce5:711c]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6e2051369a1sm37908016d6.3.2025.01.27.12.29.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jan 2025 12:29:10 -0800 (PST) Message-ID: <77358eda94737ae3b98cfb40e96d40a829712b2b.camel@gmail.com> Subject: Follow-Up: mt7915e card fails to init on Linux 6.3 and newer From: Jared Van Bortel To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee Cc: linux-wireless@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Date: Mon, 27 Jan 2025 15:29:10 -0500 In-Reply-To: <3600f032dc921e44459c266aab76806428267c5e.camel@gmail.com> References: <3600f032dc921e44459c266aab76806428267c5e.camel@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi. Just following up since I haven't seen a reply yet. The original e- mail follows. I would like to get the eyes of a maintainer on this. On Sun, 2025-01-19 at 21:24 -0500, Jared Van Bortel wrote: > Hi all, >=20 > I recently purchased a WallysTech DR7915 mPCIe Wi-Fi card (PCI ID > 14c3:7915) for my ThinkPad W500. It is ostensibly based on the MT7915 > and MT7975 chips, using the mt7915e driver. I tried it on linux-stable > 6.12.10 and was unable to get it to work. But it works fine on 6.1 > LTS. >=20 > (As an aside - why is the latest firmware provided by mainline Linux > version 20220929104113a, while OpenWRT is providing 20240429200502?) >=20 > I bisected the issue to commit > 9e81c2c7b9af6a5f160e0a9a7f009c37910402ee > ("wifi: mt76: mt7915: enable per-phy led support"), which is included > in > kernel 6.3. This is what I get in dmesg before this commit (good > behavior): >=20 > [=C2=A0=C2=A0 34.976575] mt7915e 0000:03:00.0: HW/SW Version: 0x8a108a10,= Build > Time: 20220929104113a > [=C2=A0=C2=A0 34.990089] mt7915e 0000:03:00.0: WM Firmware Version: ____0= 00000, > Build Time: 20220929104145 > [=C2=A0=C2=A0 35.012664] mt7915e 0000:03:00.0: WA Firmware Version: DEV_0= 00000, > Build Time: 20220929104205 > [=C2=A0=C2=A0 35.178619] mt7915e 0000:03:00.0 wlp3s0: renamed from wlan0 > [=C2=A0=C2=A0 44.588223] wlan0: authenticate with XX:XX:XX:XX:XX:XX > [=C2=A0=C2=A0 44.598831] wlan0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) > [=C2=A0=C2=A0 44.601589] wlan0: authenticate with XX:XX:XX:XX:XX:XX > [=C2=A0=C2=A0 44.601594] wlan0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) > [=C2=A0=C2=A0 44.611058] wlan0: authenticate with XX:XX:XX:XX:XX:XX > [=C2=A0=C2=A0 44.611064] wlan0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) > [=C2=A0=C2=A0 44.612714] wlan0: authenticated >=20 > This is what I get after that commit (bad behavior): >=20 > [=C2=A0=C2=A0 37.507795] mt7915e 0000:03:00.0: HW/SW Version: 0x8a108a10,= Build > Time: 20220929104113a > [=C2=A0=C2=A0 37.521157] mt7915e 0000:03:00.0: WM Firmware Version: ____0= 00000, > Build Time: 20220929104145 > [=C2=A0=C2=A0 37.541817] mt7915e 0000:03:00.0: WA Firmware Version: DEV_0= 00000, > Build Time: 20220929104205 > [=C2=A0=C2=A0 37.707782] mt7915e 0000:03:00.0 wlp3s0: renamed from wlan0 > [=C2=A0=C2=A0 42.984991] pcieport 0000:00:1c.1: pciehp: Slot(1-2): Link D= own > [=C2=A0=C2=A0 42.984999] pcieport 0000:00:1c.1: pciehp: Slot(1-2): Card n= ot > present > [=C2=A0=C2=A0 64.651072] mt7915e 0000:03:00.0: Message 00001eed (seq 9) t= imeout > [=C2=A0=C2=A0 85.131081] mt7915e 0000:03:00.0: Message 000007ed (seq 11) = timeout > [=C2=A0=C2=A0 85.132693] mt7915e 0000:03:00.0 wlp3s0f0: renamed from wlan= 0 > [=C2=A0 105.614421] mt7915e 0000:03:00.0: Message 000007ed (seq 1) timeou= t > [=C2=A0 107.701101] mt7915e 0000:03:00.0: Timeout for initializing firmwa= re > [=C2=A0 107.701154] mt7915e 0000:03:00.0: Failed to exit mcu > [=C2=A0 107.844646] pci 0000:03:00.0: Removing from iommu group 6 > [=C2=A0 107.844679] pcieport 0000:00:1c.1: pciehp: Slot(1-2): Card presen= t > [=C2=A0 109.541013] pcieport 0000:00:1c.1: pciehp: Slot(1-2): No link > [=C2=A0 109.541024] pcieport 0000:00:1c.1: pciehp: Slot(1-2): Card presen= t > [=C2=A0 111.234338] pcieport 0000:00:1c.1: pciehp: Slot(1-2): No link >=20 > On kernel 6.12.10, this failure leads to a page fault, sometimes > immediately: >=20 > [=C2=A0 127.807503] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] mt7915e 0000:03:00.0: = Message 00001eed (seq > 7) timeout > [=C2=A0 127.914244] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] BUG: unable to handle = page fault for > address: ffffabc5c0628ff0 > [=C2=A0 127.914294] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] #PF: supervisor write = access in kernel mode > [=C2=A0 127.914329] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] #PF: error_code(0x0002= ) - not-present page > [=C2=A0 127.914363] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] PGD 100000067 P4D 1000= 00067 PUD 100209067 > PMD 103e7f067 PTE 0 > [=C2=A0 127.914406] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Oops: Oops: 0002 [#1] = PREEMPT SMP NOPTI > [=C2=A0 127.914429] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] CPU: 0 UID: 0 PID: 73 = Comm: kworker/u16:6 > Kdump: loaded Tainted: G=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 I=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 6.12.10-arch1-1 #1 > ac0cff2c6581af0a10f6e278cbc98026cc1e3dec > [=C2=A0 127.914489] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Tainted: [I]=3DFIRMWAR= E_WORKAROUND > [=C2=A0 127.914510] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Hardware name: LENOVO = 40612ZU/40612ZU, BIOS > 6FET93WW (3.23 ) 10/12/2012 > [=C2=A0 127.914538] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Workqueue: mt76 mt7915= _mac_reset_work > [mt7915e] > [=C2=A0 127.914578] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] RIP: 0010:mt76_dma_rx_= fill+0x157/0x4c0 > [mt76] > [=C2=A0 127.914615] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Code: 8b 54 24 40 85 c= 0 4c 8b 44 24 18 4c 8b > 4c 24 20 4c 8b 5c 24 28 0f 88 2a 03 00 00 c1 e0 10 44 89 ce 44 09 d8 > 81 ce 00 01 00 00 <45> 89 34 24 41 89 44 24 08 41 89 74 24 04 41 c7 44 > 24 0c 00 00 00 > [=C2=A0 127.914677] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] RSP: 0018:ffffabc5c03a= fcf8 EFLAGS: 00010246 > [=C2=A0 127.914699] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] RAX: 0000000000000000 = RBX: ffff9b694630d800 > RCX: 0000000000000000 > [=C2=A0 127.914726] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] RDX: 0000000000000000 = RSI: 0000000006c00000 > RDI: 0000000000000000 > [=C2=A0 127.914753] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] RBP: ffff9b6947ef45d8 = R08: ffff9b6948210000 > R09: 0000000006c00000 > [=C2=A0 127.914779] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] R10: 00000000000006c0 = R11: 0000000000000000 > R12: ffffabc5c0628ff0 > [=C2=A0 127.914806] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] R13: ffff9b69c630d800 = R14: 00000000ffd15800 > R15: 0000000000000000 > [=C2=A0 127.914833] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] FS:=C2=A0 000000000000= 0000(0000) > GS:ffff9b6a77c00000(0000) knlGS:0000000000000000 > [=C2=A0 127.914868] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] CS:=C2=A0 0010 DS: 000= 0 ES: 0000 CR0: > 0000000080050033 > [=C2=A0 127.914891] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] CR2: ffffabc5c0628ff0 = CR3: 000000004b622000 > CR4: 00000000000426f0 > [=C2=A0 127.914918] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Call Trace: > [=C2=A0 127.914930] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 > [=C2=A0 127.914942] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? __die_body.col= d+0x19/0x27 > [=C2=A0 127.914967] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? page_fault_oop= s+0x15a/0x2d0 > [=C2=A0 127.914992] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? search_bpf_ext= ables+0x5f/0x80 > [=C2=A0 127.915016] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? exc_page_fault= +0x18a/0x190 > [=C2=A0 127.915035] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? asm_exc_page_f= ault+0x26/0x30 > [=C2=A0 127.915056] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? mt76_dma_rx_fi= ll+0x157/0x4c0 [mt76 > 8ebc1f1034fdcf4b82c21f7f79b6854fd3dd0e30] > [=C2=A0 127.915096] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? mt76_dma_rx_fi= ll+0x1ef/0x4c0 [mt76 > 8ebc1f1034fdcf4b82c21f7f79b6854fd3dd0e30] > [=C2=A0 127.915137] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? mt76_dma_rx_cl= eanup.part.0+0x5e/0x160 > [mt76 8ebc1f1034fdcf4b82c21f7f79b6854fd3dd0e30] > [=C2=A0 127.915185] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? mt76_dma_rx_cl= eanup.part.0+0x6c/0x160 > [mt76 8ebc1f1034fdcf4b82c21f7f79b6854fd3dd0e30] > [=C2=A0 127.915233] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 mt7915_dma_reset= +0x1e1/0x230 [mt7915e > 7945e3c7bfde237a78fef4a04127eb6221537724] > [=C2=A0 127.915280] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 mt7915_mac_reset= _work+0x67e/0xcd0 [mt7915e > 7945e3c7bfde237a78fef4a04127eb6221537724] > [=C2=A0 127.915323] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 process_one_work= +0x17b/0x330 > [=C2=A0 127.915343] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 worker_thread+0x= 2ce/0x3f0 > [=C2=A0 127.915365] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? __pfx_worker_t= hread+0x10/0x10 > [=C2=A0 127.915389] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 kthread+0xcf/0x1= 00 > [=C2=A0 127.915406] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? __pfx_kthread+= 0x10/0x10 > [=C2=A0 127.915428] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ret_from_fork+0x= 31/0x50 > [=C2=A0 127.915449] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ? __pfx_kthread+= 0x10/0x10 > [=C2=A0 127.915470] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 ret_from_fork_as= m+0x1a/0x30 > [=C2=A0 127.915494] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 > [=C2=A0 127.915507] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] Modules linked in: mt7= 915e mt76_connac_lib > mt76 mac80211 libarc4 cfg80211 snd_seq_dummy snd_hrtimer snd_seq > snd_seq_device ip6t_REJECT nf_reject_ipv6 ipt_REJECT xt_multiport > xt_cgroup xt_mark xt_owner xt_tcpudp nft_compat amdgpu amdxcp drm_exec > gpu_sched nft_masq drm_buddy nft_ct nft_reject_ipv4 nf_reject_ipv4 > nft_reject act_csum cls_u32 sch_htb nft_chain_nat nf_nat nf_conntrack > nf_defrag_ipv6 nf_defrag_ipv4 nf_tables bridge stp llc btusb btrtl > btintel btbcm btmtk bluetooth crc16 joydev mousedev snd_hda_codec_hdmi > snd_hda_codec_conexant kvm_intel iTCO_wdt snd_hda_codec_generic > intel_pmc_bxt radeon snd_hda_intel mei_wdt iTCO_vendor_support > snd_intel_dspcfg kvm i2c_algo_bit snd_intel_sdw_acpi pcmcia i2c_i801 > drm_suballoc_helper snd_hda_codec drm_ttm_helper i2c_smbus > snd_hda_core sha512_ssse3 ttm i2c_mux sha1_ssse3 snd_hwdep > yenta_socket psmouse acpi_cpufreq pcspkr e1000e r592 pcmcia_rsrc > pktcdvd mei_me snd_pcm memstick ptp drm_display_helper pcmcia_core > lpc_ich intel_agp snd_timer mei pps_core cec intel_gtt > [=C2=A0 127.915596] [=C2=A0=C2=A0=C2=A0=C2=A0 T73]=C2=A0 think_lmi mac_hi= d firmware_attributes_class > wmi_bmof coretemp thinkpad_acpi platform_profile sparse_keymap rfkill > snd soundcore video wmi sg crypto_user dm_mod loop nfnetlink ip_tables > x_tables btrfs blake2b_generic libcrc32c crc32c_generic serio_raw > sdhci_pci xor atkbd raid6_pq libps2 vivaldi_fmap firewire_ohci cqhci > sr_mod sdhci firewire_core sha256_ssse3 mmc_core cdrom i8042 crc_itu_t > serio > [=C2=A0 127.916035] [=C2=A0=C2=A0=C2=A0=C2=A0 T73] CR2: ffffabc5c0628ff0 >=20 >=20 > It would be nice to be able to use this card on a more recent kernel. > I > can assist with debugging and testing, assuming I haven't somehow > gotten > a defective unit - but I don't think that would really explain why I > can > use it just fine on 6.1 LTS. >=20 > Thanks, > Jared Van Bortel