[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

Peter Wu <peter at lekensteyn.nl> changed:

           What    |Removed                     |Added
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                 CC|                            |peter at lekensteyn.nl

--- Comment #6 from Peter Wu <peter at lekensteyn.nl> ---
The problem is that nouveau_switcheroo_optimus_dsm() unconditionally calls
function 0x1B ("NOUVEAU_DSM_OPTIMUS_FLAGS") without checking that this function
is actually supported. Lenovo's firmware decides to run into an infinite loop
in this case instead of returning an error code.

Proposed patch:
https://lkml.kernel.org/r/1463244575-3515-1-git-send-email-peter@lekensteyn.nl

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