https://bugzilla.kernel.org/show_bug.cgi?id=215347 Bug ID: 215347 Summary: btintel: AX200 (8087:0029): hci crashed and can't recover after repeated rfkill on/off Product: Drivers Version: 2.5 Kernel Version: 5.16-rc5 Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: hui.wang@xxxxxxxxxxxxx Regression: No Created attachment 300051 --> https://bugzilla.kernel.org/attachment.cgi?id=300051&action=edit testing script We have a couple of Lenovo machines which have Bluetooth hci (8087:0029), If we run a script like below: for a in {1..100} do echo $a rfkill block $HCI0_ID sleep 1 rfkill unblock $HCI0_ID sleep 1 done The kernel will print "hci0: Failed to read MSFT supported features (-110)" after several round of rfkill block/unblock, and the bluetooth driver can't work anymore from that moment. Sometimes 'rmmod btusb;modprobe btusb" could make the bluetooth driver work again, sometimes need to reboot. We already updated the kernel and linux-firmware to the latest, but still could reproduce above issue. And we run the same test on other machines with different Bluetooth hci like 8087:0026, they all work well with the testing script. The 8087:0029 hci loads the intel/ibt-20-1-3.sfi, we suspect this is an issue on the bluetooth firmware ibt-20-1-3.sfi, since 8087:0026 shares the same kernel driver with 0029, but only 0029 has this issue. And the testing script is attached. -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.
