linux-kernel - Re: [PATCH v2 4/4] toshiba_acpi: Add blacklist for models with hotkey problems

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Message-ID: <20120105182627.GE24242@srcf.ucam.org>
Date:	Thu, 5 Jan 2012 18:26:27 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Seth Forshee <seth.forshee@...onical.com>
Cc:	Len Brown <lenb@...nel.org>, Azael Avalos <coproscefalo@...il.com>,
	Thomas Renninger <trenn@...e.de>,
	platform-driver-x86@...r.kernel.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] toshiba_acpi: Add blacklist for models with
 hotkey problems

On Tue, Jan 03, 2012 at 01:02:38PM -0600, Seth Forshee wrote:
> Several Satellite models have a buggy implementation of the INFO method
> that causes ACPI exceptions when executed:
> 
>  ACPI Error: Result stack is empty! State=ffff88012d70f800 (20110413/dswstate-98)
>  ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110413/dsutils-646)
>  ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20110413/dsutils-763)
>  ACPI Error: Method parse/execution failed [\_SB_.VALZ.GETE] (Node ffff880131175eb0), AE_AML_NO_RETURN_VALUE (20110413/psparse-536)
>  ACPI Error: Method parse/execution failed [\_SB_.VALZ.INFO] (Node ffff880131175ed8), AE_AML_NO_RETURN_VALUE (20110413/psparse-536)
>  toshiba_acpi: ACPI INFO method execution failed
>  toshiba_acpi: Failed to query hotkey event

Ugh, in several ways. The hotkeys on these machines are presumably 
supposed to work - do we have any idea what we should be doing?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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