linux-kernel - Re: [PATCH v6 02/12] ata: ahci_brcm: Fix use of BCM7216 reset controller

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Date:   Thu, 2 Jul 2020 12:32:24 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Jim Quinlan <james.quinlan@...adcom.com>,
        linux-pci@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        bcm-kernel-feedback-list@...adcom.com
Cc:     Jens Axboe <axboe@...nel.dk>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" 
        <linux-ide@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 02/12] ata: ahci_brcm: Fix use of BCM7216 reset
 controller

Hello!

On 02.07.2020 0:21, Jim Quinlan wrote:

> From: Jim Quinlan <jquinlan@...adcom.com>
> 
> A reset controller "rescal" is shared between the AHCI driver and the PCIe
> driver for the BrcmSTB 7216 chip.  Use
> devm_reset_control_get_optional_shared control() to handle this sharing.

    Not "devm_reset_control_get_optional_shared() control"?

> 
> Signed-off-by: Jim Quinlan <jquinlan@...adcom.com>
> 
> Fixes: 272ecd60a636 ("ata: ahci_brcm: BCM7216 reset is self de-asserting")
> Fixes: c345ec6a50e9 ("ata: ahci_brcm: Support BCM7216 reset controller name")
> ---
>   drivers/ata/ahci_brcm.c | 11 +++--------
>   1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/ata/ahci_brcm.c b/drivers/ata/ahci_brcm.c
> index 6853dbb4131d..d6115bc04b09 100644
> --- a/drivers/ata/ahci_brcm.c
> +++ b/drivers/ata/ahci_brcm.c
[...]
> @@ -452,11 +451,10 @@ static int brcm_ahci_probe(struct platform_device *pdev)
>   
>   	/* Reset is optional depending on platform and named differently */
>   	if (priv->version == BRCM_SATA_BCM7216)
> -		reset_name = "rescal";
> +		priv->rcdev = devm_reset_control_get_optional_shared(&pdev->dev, "rescal");
>   	else
> -		reset_name = "ahci";
> +		priv->rcdev = devm_reset_control_get_optional(&pdev->dev, "ahci");
>   
> -	priv->rcdev = devm_reset_control_get_optional(&pdev->dev, reset_name);
>   	if (IS_ERR(priv->rcdev))
>   		return PTR_ERR(priv->rcdev);
>   
[...]

MBR, Sergei