linux-kernel - Re: [PATCH v2 0/5] ACPI / EC: Add reference counting for requests and cleans up the grace periods support.

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Message-ID: <1711204.9KEDEeQMDo@vostro.rjw.lan>
Date:	Fri, 06 Feb 2015 02:26:30 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Lv Zheng <lv.zheng@...el.com>
Cc:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Len Brown <len.brown@...el.com>, Lv Zheng <zetalog@...il.com>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v2 0/5] ACPI / EC: Add reference counting for requests and cleans up the grace periods support.

On Friday, February 06, 2015 08:57:37 AM Lv Zheng wrote:
> This patchset contains 3 cleanups related to the EC driver:
> 1. Command flushing (command grace period)
>    This patchset flushes EC commands before suspending/resuming, so that
>    there won't be timeout for the incomplete commands after resuming.
> 2. Query flushing (query grace period)
>    This patchset flushes EC event queries before suspending/resuming, so
>    that there won't be broken events remained in the firmware queue.
> 3. Command storming prevention
>    This patchset corrects command storming prevention logic because of
>    the GPE raw handler mode.
> The request reference count debugging messages can be used to detect broken
> EC transactions. It should always drop to 1 when the driver is idle during
> the runtime.
> 
> Note that after flushing before suspending, EC GPE is still enabled to keep
> the old behavior.
> 
> Lv Zheng (5):
>   ACPI/EC: Introduce STARTED/STOPPED flags to replace BLOCKED flag.
>   ACPI/EC: Add command flushing support.
>   ACPI/EC: Refine command storm prevention support.
>   ACPI/EC: Add query flushing support.
>   ACPI/EC: Add GPE reference counting debugging messages.
> 
>  drivers/acpi/ec.c       |  295 ++++++++++++++++++++++++++++++++++++++++-------
>  drivers/acpi/internal.h |    1 +
>  2 files changed, 254 insertions(+), 42 deletions(-)

So this is on top of the EC patches you sent previously, right?


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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