linux-kernel - Re: gpio desc flags being lost

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Message-ID: <f9eb3387ed384676b0b298e4da7eeaf0@svr-chch-ex1.atlnz.lc>
Date:   Wed, 3 Jul 2019 09:29:32 +0000
From:   Chris Packham <Chris.Packham@...iedtelesis.co.nz>
To:     Linus Walleij <linus.walleij@...aro.org>
CC:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: gpio desc flags being lost

On 3/07/19 6:28 PM, Linus Walleij wrote:
> On Wed, Jul 3, 2019 at 7:35 AM Chris Packham
> <Chris.Packham@...iedtelesis.co.nz> wrote:
> 
>> Doing a bit of debugging so far I see that after startup the desc->flags
>> for those gpios is 0. But for the hogged ones it should be 0x800 (or 0x801).
> 
> Yeah that is wrong.
> 
>> I'll do some proper bisecting tomorrow, but figured you might want to
>> know sooner rather than later.
> 
> Thanks, I have another critical GPIO fix queued so would be great if we
> can fix this too before v5.2 is released.

Bit of an update. v4.19.54 works, v5.1.15 is broken. I'll keep bisecting 
between those tomorrow.