Re: [PATCH] Bluetooth: hci_sync: Fix handling of HCI_QUIRK_STRICT_DUPLICATE_FILTER

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On 12.09.23 21:09, Luiz Augusto von Dentz wrote:
> On Mon, Sep 11, 2023 at 6:40 AM Linux regression tracking (Thorsten
> Leemhuis) <regressions@xxxxxxxxxxxxx> wrote:
>> On 31.08.23 00:20, patchwork-bot+bluetooth@xxxxxxxxxx wrote:
>>> This patch was applied to bluetooth/bluetooth-next.git (master)
>>> by Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>:
>>> On Tue, 29 Aug 2023 13:59:36 -0700 you wrote:
>>>> From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
>>>>
>>>> When HCI_QUIRK_STRICT_DUPLICATE_FILTER is set LE scanning requires
>>>> periodic restarts of the scanning procedure as the controller would
>>>> consider device previously found as duplicated despite of RSSI changes,
>>>> but in order to set the scan timeout properly set le_scan_restart needs
>>>> to be synchronous so it shall not use hci_cmd_sync_queue which defers
>>>> the command processing to cmd_sync_work.
>>>>
>>>> [...]
>>>
>>> Here is the summary with links:
>>>   - Bluetooth: hci_sync: Fix handling of HCI_QUIRK_STRICT_DUPLICATE_FILTER
>>>     https://git.kernel.org/bluetooth/bluetooth-next/c/52bf4fd43f75
>>
>> That is (maybe among others?) a fix for a regression from 6.1, so why
>> was this merged into a "for-next" branch instead of a branch that
>> targets the current cycle?
> 
> We were late for including it to 6.5, that said the regression was
> introduced in 6.4,

6.4? From the fixes tag it sounded like it was 6.1. Whatever, doesn't
make a difference, because:

That answer doesn't answer the question afaics, as both 6.1 and 6.4 were
released in the past year -- the fix thus should not wait till the next
merge window, unless it's high risk or something. See this statement
from Linus:
https://lore.kernel.org/all/CAHk-=wis_qQy4oDNynNKi5b7Qhosmxtoj1jxo5wmB6SRUwQUBQ@xxxxxxxxxxxxxx/

> but I could probably have it marked for stable just
> to make sure it would get backported to affected versions.

That would be great, too!

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.



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