linux-kernel - [PATCH] Gracely handle GPE dispatch failure

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Message-ID: <CAMe9rOqud3k4kxd_b9L26GH8zH8AKoY7a7imN0YP7TGFW7zRWg@mail.gmail.com>
Date:	Thu, 16 Apr 2015 16:37:45 -0700
From:	"H.J. Lu" <hjl.tools@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] Gracely handle GPE dispatch failure

When GPE dispatch fails due to missing handler, kernel issues

ACPI Error: No handler for Region
ACPI Error: Region EmbeddedControl
ACPI Error: Method parse/execution failed
ACPI Exception: AE_NOT_EXIST, while evaluating GPE method

and goes ahead enable GPE anyway.  After that, kernel goes into an
infinite loop:

ACPI Error: No handler for Region
ACPI Error: Region EmbeddedControl
ACPI Error: Method parse/execution failed
ACPI Exception: AE_NOT_EXIST, while evaluating GPE method

and repeat.  This patch avoids the infinite loop by not enabling GPE if
GPE dispatch fails.

-- 
H.J.

View attachment "0001-Gracely-handle-GPE-dispatch-failure.patch" of type "text/x-patch" (1309 bytes)