linux-kernel - Re: [PATCH 2/3] soc/tegra: pmc: Allow optional irq parent callbacks

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Message-ID: <20201005112755.GS425362@ulmo>
Date:   Mon, 5 Oct 2020 13:27:55 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Jonathan Hunter <jonathanh@...dia.com>,
        Dmitry Osipenko <digetx@...il.com>,
        Sowjanya Komatineni <skomatineni@...dia.com>,
        Venkat Reddy Talla <vreddytalla@...dia.com>,
        Thomas Gleixner <tglx@...utronix.de>, kernel-team@...roid.com
Subject: Re: [PATCH 2/3] soc/tegra: pmc: Allow optional irq parent callbacks

On Mon, Oct 05, 2020 at 12:14:42PM +0100, Marc Zyngier wrote:
> Make the PMC driver resistent to variable depth interrupt hierarchy,
> which we are about to introduce. The irq_chip structure is now
> allocated statically, providing the indirection for the couple of
> callbacks that are SoC-specific.
> 
> Signed-off-by: Marc Zyngier <maz@...nel.org>
> ---
>  drivers/soc/tegra/pmc.c | 65 ++++++++++++++++++++++++++++++++++-------
>  1 file changed, 54 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
> index d332e5d9abac..9960f7c18431 100644
> --- a/drivers/soc/tegra/pmc.c
> +++ b/drivers/soc/tegra/pmc.c
> @@ -439,7 +439,6 @@ struct tegra_pmc {
>  	struct pinctrl_dev *pctl_dev;
>  
>  	struct irq_domain *domain;
> -	struct irq_chip irq;

Did you have any particular reason for pulling this out of the struct
tegra_pmc and making it a global variable?

Thierry

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