linux-kernel - Re: [PATCH v1] ata: ahci_tegra: call tegra_powergate_power

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Date:   Thu, 8 Apr 2021 22:58:06 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sowjanya Komatineni <skomatineni@...dia.com>, axboe@...nel.dk,
        thierry.reding@...il.com
Cc:     jonathanh@...dia.com, linux-ide@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] ata: ahci_tegra: call tegra_powergate_power_off only
 when PM domain is not present

08.04.2021 19:40, Sowjanya Komatineni пишет:
> This patch adds a check on present of PM domain and calls legacy power
> domain API tegra_powergate_power_off() only when PM domain is not present.
> 
> This is a follow-up patch to Tegra186 AHCI support patch series
> https://lore.kernel.org/patchwork/cover/1408752/
> 
> Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
> 
> ---
>  drivers/ata/ahci_tegra.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/ata/ahci_tegra.c b/drivers/ata/ahci_tegra.c
> index 56612af..bd484dd 100644
> --- a/drivers/ata/ahci_tegra.c
> +++ b/drivers/ata/ahci_tegra.c
> @@ -287,7 +287,8 @@ static void tegra_ahci_power_off(struct ahci_host_priv *hpriv)
>  	reset_control_assert(tegra->sata_cold_rst);
>  
>  	clk_disable_unprepare(tegra->sata_clk);
> -	tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
> +	if (!tegra->pdev->dev.pm_domain)
> +		tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
>  
>  	regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
>  }
> 

There are two instances of tegra_powergate_power_off() in the driver.