linux-kernel - Re: [PATCH 2/8] mfd: cros_ec_i2c: move the system sleep pm ops to late

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Message-ID: <20170811033115.GA11011@decatoncale.mtv.corp.google.com>
Date:   Thu, 10 Aug 2017 20:31:15 -0700
From:   Benson Leung <bleung@...gle.com>
To:     Thierry Escande <thierry.escande@...labora.com>
Cc:     Benson Leung <bleung@...omium.org>,
        Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
        bleung@...gle.com, josephl@...dia.com
Subject: Re: [PATCH 2/8] mfd: cros_ec_i2c: move the system sleep pm ops to
 late

Hi Thierry,

On Fri, Aug 11, 2017 at 12:16:44AM +0200, Thierry Escande wrote:
> From: Joseph Lo <josephl@...dia.com>
> 

Again, please copy the original author.

> The cros_ec_i2c driver is still active after it had suspended or before it
> resumes. Besides that, it also tried to transfer data even after the I2C
> host had been suspended. This leads the system to crash.
> 
> During the test, we also observed that the EC needs to be resumed
> earlier due to some status polling from the EC firmware (e.g. battery
> status). This patch moves the PM ops to late stage to make it work
> normally.
> 
> Signed-off-by: Joseph Lo <josephl@...dia.com>
> Signed-off-by: Thierry Escande <thierry.escande@...labora.com>

Acked-by: Benson Leung <bleung@...omium.org>

Thanks!
Benson

-- 
Benson Leung
Staff Software Engineer
Chrome OS Kernel
Google Inc.
bleung@...gle.com
Chromium OS Project
bleung@...omium.org

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