Hi Kai-Heng, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> writes: > Hi Mattijs, > > On Fri, Jul 30, 2021 at 7:40 PM Mattijs Korpershoek > <mkorpershoek@xxxxxxxxxxxx> wrote: >> >> Hi Kai-Heng, > > [snipped] > >> Thank you for your help. Sorry I did not post the logs previously. >> >> dmesg: https://pastebin.com/tpWDNyQr >> ftrace on btmtksdio: https://pastebin.com/jmhvmwUw > > Seems like btmtksdio needs shudown() to be called before flush(). > Since the order was there for a very long time, changing the calling > order indeed can break what driver expects. > Can you please test the following patch: > diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c > index 2560ed2f144d..a61e610a400c 100644 > --- a/net/bluetooth/hci_core.c > +++ b/net/bluetooth/hci_core.c > @@ -1785,6 +1785,14 @@ int hci_dev_do_close(struct hci_dev *hdev) > aosp_do_close(hdev); > msft_do_close(hdev); > > + if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && > + !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && > + test_bit(HCI_UP, &hdev->flags)) { > + /* Execute vendor specific shutdown routine */ > + if (hdev->shutdown) > + hdev->shutdown(hdev); > + } > + > if (hdev->flush) > hdev->flush(hdev); > > @@ -1798,14 +1806,6 @@ int hci_dev_do_close(struct hci_dev *hdev) > clear_bit(HCI_INIT, &hdev->flags); > } > > - if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && > - !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && > - test_bit(HCI_UP, &hdev->flags)) { > - /* Execute vendor specific shutdown routine */ > - if (hdev->shutdown) > - hdev->shutdown(hdev); > - } > - > /* flush cmd work */ > flush_work(&hdev->cmd_work); Thanks for the patch and your help. I've tried it, but it seems that it does not improve for me. I'm still observing: i500-pumpkin login: root root@i500-pumpkin:~# hciconfig hci0 up Can't init device hci0: Connection timed out (110) Logs for this session: dmesg: https://pastebin.com/iAFk5Tzi ftrace: https://pastebin.com/kEMWSYrE > > Kai-Heng > >> >> Mattijs >> > >> > Kai-Heng >> > >> >> >> >> Thanks, >> >> Mattijs Korpershoek >> >> >> >> >> >> > >> >> > Regards >> >> > >> >> > Marcel
