[Bug 198953] hci_bcm: Streamline runtime PM code change for 4.16 kernel breaks bluetooth on ASUS T100TA

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https://bugzilla.kernel.org/show_bug.cgi?id=198953

Hans de Goede (jwrdegoede@xxxxxxxxxxxxxxxxx) changed:

           What    |Removed                     |Added
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                 CC|                            |jwrdegoede@xxxxxxxxxxxxxxxx
                   |                            |g

--- Comment #5 from Hans de Goede (jwrdegoede@xxxxxxxxxxxxxxxxx) ---
Hi All,

So as discussed on the bluetooth list I've hit the same problem of the bcm
bluetooth device getting stuck in suspend. My solution is a simple revert of
the offending commit, as instead of being just a simple cleanup it has
unintended and unwanted side-effects. Anyways lets discuss that further on the
list.

My main reason for replying here is because of the adding of extra dmi matches
for active-low interrupts. I've come up with an alternative approach which
actually removes DMI matches, since I believe that we simply need to always
treat the IRQ as active-low if it is declared with an "Interrupt" ACPI resource
(the other way is with a "GpioInt" resource).

I'll attach my patch for this, if you can test this on the machines needing an
extra DMI match that would be great. I would also appreciate it if you can run:

acpidump -o acpidump.vendorname-modelname

And attach the generated acpidump.vendorname-modelname file here.

Regards,

Hans

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