linux-kernel - Re: [PATCH] drivers: net: Replace acpi_bus_get

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Message-ID: <YfmJmgE/KuS8G92w@lunn.ch>
Date:   Tue, 1 Feb 2022 20:27:22 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Sunil Goutham <sgoutham@...vell.com>,
        Iyappan Subramanian <iyappan@...amperecomputing.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Keyur Chudgar <keyur@...amperecomputing.com>,
        Quan Nguyen <quan@...amperecomputing.com>,
        Heiner Kallweit <hkallweit1@...il.com>, netdev@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH] drivers: net: Replace acpi_bus_get_device()

On Tue, Feb 01, 2022 at 08:07:08PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Replace acpi_bus_get_device() that is going to be dropped with
> acpi_fetch_acpi_dev().
> 
> No intentional functional impact.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>  drivers/net/ethernet/cavium/thunder/thunder_bgx.c |    4 ++--
>  drivers/net/fjes/fjes_main.c                      |   10 +++-------
>  drivers/net/mdio/mdio-xgene.c                     |    8 +++-----
>  3 files changed, 8 insertions(+), 14 deletions(-)
> 
> Index: linux-pm/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> ===================================================================
> --- linux-pm.orig/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> +++ linux-pm/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> @@ -1407,9 +1407,9 @@ static acpi_status bgx_acpi_register_phy
>  {
>  	struct bgx *bgx = context;
>  	struct device *dev = &bgx->pdev->dev;
> -	struct acpi_device *adev;
> +	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);

Hi Rafael

Since this is part of the networking subsystem, reverse christmas tree
applies. Yes, this driver gets is wrong here, but we should not make
it even worse. Please put this variable first.

> Index: linux-pm/drivers/net/mdio/mdio-xgene.c
> ===================================================================
> --- linux-pm.orig/drivers/net/mdio/mdio-xgene.c
> +++ linux-pm/drivers/net/mdio/mdio-xgene.c
> @@ -280,15 +280,13 @@ static acpi_status acpi_register_phy(acp
>  				     void *context, void **ret)
>  {
>  	struct mii_bus *mdio = context;
> -	struct acpi_device *adev;
> +	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);

Here as well please.

With those changes, you can add my Reviewed-by:

Thanks
     Andrew