linux-kernel - Re: [PATCH v4 3/3] gpiolib: Show correct direction from the beginning

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Message-ID: <b020854a-819e-a0b4-5e29-a2aca19fad59@codeaurora.org>
Date:   Fri, 5 Oct 2018 08:18:59 -0600
From:   Jeffrey Hugo <jhugo@...eaurora.org>
To:     Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Timur Tabi <timur@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        linux-gpio <linux-gpio@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 3/3] gpiolib: Show correct direction from the beginning

On 10/5/2018 12:52 AM, Ricardo Ribalda Delgado wrote:
> Hi
> On Fri, Oct 5, 2018 at 12:26 AM Jeffrey Hugo <jhugo@...eaurora.org> wrote:
>>
>> On 10/2/2018 9:21 AM, Jeffrey Hugo wrote:
>>> On 10/2/2018 8:08 AM, Ricardo Ribalda Delgado wrote:
>>>> Current code assumes that the direction is input if direction_input
>>>> function is set.
>>>> This might not be the case on GPIOs with programmable direction.
>>>>
>>>> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
>>>
>>> I'll try to get this series tested on QDF2400 by the end of the week.
>>
>> 1-2/3 (v3) and 3/3 (v4) still fails.  Same issue.  Attempting to access
>> config registers for GPIO 0 when the OS is not allowed to do that.
>>
> 
> I think that I might found the bug. if gpio-reserved-ranges was
> present the initialization was lost.
> 
> Can you try with v5
> 
> Thanks for your help

I'll let you know how it goes.

-- 
Jeffrey Hugo
Qualcomm Datacenter Technologies as an affiliate of Qualcomm 
Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.