linux-kernel - Re: [PATCH v3] gpio: tegra186: Check GPIO pin permission before access.

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Date:   Fri, 7 Oct 2022 12:25:14 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Prathamesh Shete <pshete@...dia.com>
Cc:     linus.walleij@...aro.org, bgolaszewski@...libre.com,
        jonathanh@...dia.com, linux-gpio@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        smangipudi@...dia.com, kyarlagadda@...dia.com,
        Manish Bhardwaj <mbhardwaj@...dia.com>
Subject: Re: [PATCH v3] gpio: tegra186: Check GPIO pin permission before
 access.

On Fri, Oct 07, 2022 at 11:29:36AM +0530, Prathamesh Shete wrote:
> This change checks if we have the necessary permission to
> access the GPIO. For devices that have support for virtualisation
> we need to check both the TEGRA186_GPIO_VM_REG and the
> TEGRA186_GPIO_SCR_REG registers. For device that do not have
> virtualisation support for GPIOs we only need to check the
> TEGRA186_GPIO_SCR_REG register.
> 
> Signed-off-by: Manish Bhardwaj <mbhardwaj@...dia.com>
> Signed-off-by: Prathamesh Shete <pshete@...dia.com>
> ---
>  drivers/gpio/gpio-tegra186.c | 78 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 78 insertions(+)

I like it, thanks!

Acked-by: Thierry Reding <treding@...dia.com>

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