linux-firmware SRU:
* https://lists.ubuntu.com/archives/kernel-team/2021-December/126404.html
(focal)
** Description changed:
+ [SRU Justification]
+
+ [Impact]
+
+ MT7921 might fail at device probe at boot:
+
+ mt7921e 0000:03:00.0: WM Firmware Version: ____010000, Build Time:
20211014150922
+ IPv6: ADDRCONF(NETDEV_CHANGE): enp2s0: link becomes ready
+ mt7921e 0000:03:00.0: Message 80000002 (seq 9) timeout
+ mt7921e 0000:03:00.0: Failed to start WM firmware
+ mt7921e: probe of 0000:03:00.0 failed with error -110
+
+ [Fix]
+
+ Kernel fixes:
+ * 995d948cf2e4 ("Bluetooth: btusb: Return error code when getting patch status
+ failed")
+ * 00c0ee9850b7 ("Bluetooth: btusb: Handle download_firmware failure cases")
+
+ And firmware:
+ * 948cad200e94 ("linux-firmware: update frimware for mediatek bluetooth chip
+ (MT7921)")
+
+ [Test Case]
+
+ Run checkbox reboot stress tests to try trigger this issue:
+
+ $ checkbox-cli run com.canonical.certification::stress/reboot
+
+ [Where problems could occur]
+
+ This imports fixes requiring both kernel driver and proprietary firmware
+ updates, the firmware part might cause instability or so.
+
+ ========== original bug report ==========
+
Oct 25 22:40:10 u kernel: [ 6.194102] mt7921e 0000:03:00.0: WM Firmware
Version: ____010000, Build Time: 20211014150922
Oct 25 22:40:11 u kernel: [ 7.948458] rfkill: input handler disabled
Oct 25 22:40:12 u kernel: [ 9.012741] r8169 0000:02:00.0 enp2s0: Link is Up -
1Gbps/Full - flow control rx/tx
Oct 25 22:40:12 u kernel: [ 9.012766] IPv6: ADDRCONF(NETDEV_CHANGE): enp2s0:
link becomes ready
Oct 25 22:40:13 u kernel: [ 9.174471] usb 1-2.4: device descriptor read/64,
error -110
Oct 25 22:40:13 u kernel: [ 9.250459] mt7921e 0000:03:00.0: Message 80000002
(seq 9) timeout
Oct 25 22:40:13 u kernel: [ 9.250470] mt7921e 0000:03:00.0: Failed to start
WM firmware
Oct 25 22:40:13 u kernel: [ 9.250596] mt7921e: probe of 0000:03:00.0 failed
with error -110
This takes following fixes to resolve completely:
* kernel patch:
- *
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=995d948cf2e45834275f07afc1c9881a9902e73c
- *
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=00c0ee9850b7b0cb7c40b8daba806ae2245e59d4
+ *
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=995d948cf2e45834275f07afc1c9881a9902e73c
+ *
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=00c0ee9850b7b0cb7c40b8daba806ae2245e59d4
* firmware:
- *
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=948cad200e94d82d339207f8ac7b10f932bd627a
+ *
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=948cad200e94d82d339207f8ac7b10f932bd627a
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https://bugs.launchpad.net/bugs/1954300
Title:
mt7921e: Failed to start WM firmware
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