Re: [PATCH v3 3/3] ACPI: resource: Honor MADT INT_SRC_OVR settings for IRQ1 on AMD Zen

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Hi,

On 8/9/23 21:25, Rafael J. Wysocki wrote:
> On Wed, Aug 9, 2023 at 9:20 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
>>
>> Hi,
>>
>> On 8/9/23 17:58, August Wikerfors wrote:
>>> On 2023-08-09 10:55, Hans de Goede wrote:
>>>> On AMD Zen acpi_dev_irq_override() by default prefers the DSDT IRQ 1
>>>> settings over the MADT settings.
>>>>
>>>> This causes the keyboard to malfunction on some laptop models
>>>> (see Links), all models from the Links have an INT_SRC_OVR MADT entry
>>>> for IRQ 1.
>>>>
>>>> Fixes: a9c4a912b7dc ("ACPI: resource: Remove "Zen" specific match and quirks")
>>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217336
>>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217394
>>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217406
>>>> Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
>>>> Cc: Linux regressions mailing list <regressions@xxxxxxxxxxxxxxx>
>>>> Cc: stable@xxxxxxxxxxxxxxx
>>>> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
>>>
>>> One of the laptops fixed by a9c4a912b7dc, PCSpecialist Elimina Pro 16 M [1], seems to have no INT_SRC_OVR entry for IRQ 1 [2]:
>>>
>>>> [    0.084265] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>>>> [    0.084266] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
>>>
>>> I'm not sure if it was IRQ 1 that needed to be overridden for that model though, so it may work anyway with patch 2 of this series.
>>>
>>> [1] https://bugzilla.kernel.org/show_bug.cgi?id=217394#c18
>>> [2] https://bugzilla.kernel.org/attachment.cgi?id=304338
>>
>> Good catch, thanks. So it looks like this one needs a DMI quirk (until we have a better generic solution.
>>
>> I'll reach out to the reporter and ask for dmidecode output and prepare a follow-up patch. Still I think
>> that we should move forward with this series to fix the 6 bugs which are linked to from PAtch 1's
>> commitmsg and those are likely just the top of the iceberg.
> 
> You are probably right, but it would be good to get a fix for this
> ASAP, as I would prefer it to go in along with the series, if
> possible.

Agreed I've asked in the bugzilla for dmidecode output for the laptop model in question (I checked  https://linux-hardware.org/ and it does not have this model).

As soon as I've dmidecode info I'll prepare the follow-up patch as well as a Fedora kernel with the entire series + qurik patch for the reporter to test.

Regards,

Hans





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