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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Lv Zheng <lv.zheng@intel.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        Len Brown <len.brown@intel.com>, Lv Zheng <zetalog@gmail.com>,
        linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: [PATCH 0/4] ACPI 2.0 / ECDT: Enable ECDT support
Date: Thu, 21 Apr 2016 02:19:26 +0200
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On Thursday, March 24, 2016 10:42:38 AM Lv Zheng wrote:
> ECDT support in Linux is broken.
> 
> In fact, the original EC driver was correct, but devlopers started to use
> the namespace EC instead of ECDT just because several broken ECDT tables
> were reported on the bugzilla. They trusted the namespace EC settings
> rather than the ECDT ones, this led to the evaluation of _REG/_GPE/_CRS
> and namespace walk before executing the module level AML opcodes. And the
> fixes in fact finally disable early EC usages (used during table loading
> and early device enumeration processes).
> 
> Lv Zheng (4):
>   ACPI 2.0 / ECDT: Split EC_FLAGS_HANDLERS_INSTALLED
>   ACPI 2.0 / ECDT: Remove early namespace reference from EC
>   ACPI 2.0 / ECDT: Enable correct ECDT initialization order
>   ACPI 2.0 / AML: Improve module level execution by moving the
>     If/Else/While execution to per-table basis
> 
>  drivers/acpi/bus.c    |   39 +++++---
>  drivers/acpi/ec.c     |  241 ++++++++++++++++++++++---------------------------
>  include/acpi/acpixf.h |    2 +-
>  3 files changed, 135 insertions(+), 147 deletions(-)

All [1-4/4] applied, thanks!