Hi Zijun, On Tue, Oct 25, 2022 at 11:08 AM Jack <ostroffjh@xxxxxxxxxxxxxxxxxxxxx> wrote: > > On 2022.10.25 03:02, Paul Menzel wrote: > > Thank you for your work on this driver. > > > > Am 24.10.22 um 23:11 schrieb Jack: > >> Cheap USB BT dongles that are bad clones of CSR "ID 0a12:0001 > >> Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)" have had > >> historic problems, due to various bad behaviors. See [Bug 60824] > >> [PATCH][regression] Cambridge Silicon Radio, Ltd Bluetooth Dongle > >> unusable (https://bugzilla.kernel.org/show_bug.cgi) for more details > >> and background. The patch in that bug was initially mainlined in > >> 5.9, and underwent several revisions since then. It has continued > >> to work through all of the 5.19 series, but it does not work with > >> any of the 6.0 kernels. > >> > >> I have made three unsuccessful attempts to git bisect using vanilla > >> sources. All settled on totally irrelevant commits. These have all > >> used v6.0-rc1 and v5.19 as the starting bad and good commits. > > > Before receiving your reply, I made another start at bisect > > # bad: [5030a9a03f0107f645772450bcba521b2ec19a51] dt-bindings: net: > fsl,fec: Add nvmem-cells / nvmem-cell-names properties > # good: [8a958732818bc27f7da4d41ecf2c5c99d9aa8b0e] tls: rx: factor out > device darg update > git bisect start '5030a9a03f0107f645772450bcba521b2ec19a51' > '8a958732818bc27f7da4d41ecf2c5c99d9aa8b0e' > # good: [7ca433dc6dedb2ec98dfc943f6db0c9b8996ed11] Merge tag > 'net-5.19-rc8' of > git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net > git bisect good 7ca433dc6dedb2ec98dfc943f6db0c9b8996ed11 > # bad: [e168f690087735ad12604ee6ee2db1b93e323072] Bluetooth: btusb: > Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING for fake CSR > git bisect bad e168f690087735ad12604ee6ee2db1b93e323072 > # good: [5fb859f79f4f49d9df16bac2b3a84a6fa3aaccf1] net: ipa: initialize > ring indexes to 0 > git bisect good 5fb859f79f4f49d9df16bac2b3a84a6fa3aaccf1 > # good: [ec2ea5e06c67f85c6541a74b661722a176be086f] net: ipa: list > supported IPA versions in the Makefile > git bisect good ec2ea5e06c67f85c6541a74b661722a176be086f > # good: [df332800a914e9fd97b83aa63832979227fd8a8d] Bluetooth: > btmtksdio: Add in-band wakeup support > git bisect good df332800a914e9fd97b83aa63832979227fd8a8d > # good: [6f43f6169a8229bb6ddbf483d3be760d48c4cdd1] Bluetooth: clean up > error pointer checking > git bisect good 6f43f6169a8229bb6ddbf483d3be760d48c4cdd1 > # good: [46459cb6d4e63066e227a496ae8af35ba8c0b23b] Bluetooth: hci_bcm: > Increase host baudrate for CYW55572 in autobaud mode > git bisect good 46459cb6d4e63066e227a496ae8af35ba8c0b23b > # good: [0feb8af0275d196a29e321bedc15319673923cb6] Bluetooth: hci_sync: > Correct hci_set_event_mask_page_2_sync() event mask > git bisect good 0feb8af0275d196a29e321bedc15319673923cb6 > # bad: [1172c59f451f524a14bac5e7b047781883dfe441] Bluetooth: btusb: > Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING for QCA > git bisect bad 1172c59f451f524a14bac5e7b047781883dfe441 > # bad: [766ae2422b4312a73510ebee9266bc23b466fbbb] Bluetooth: hci_sync: > Check LMP feature bit instead of quirk > git bisect bad 766ae2422b4312a73510ebee9266bc23b466fbbb > # first bad commit: [766ae2422b4312a73510ebee9266bc23b466fbbb] > Bluetooth: hci_sync: Check LMP feature bit instead of quirk > > And 766ae2422b4312a73510ebee9266bc23b466fbbb does make sense as a > likely culprit. Looks like we will need to reintroduce the quirk then since it appears the LMP feature bit is probably set in those controllers but the command doesn't work. -- Luiz Augusto von Dentz
