linux-kernel - Re: [PATCH v1 03/10] ipmi_si: Utilize temporary variable to hold device pointer

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Date:   Fri, 2 Apr 2021 08:45:55 -0500
From:   Corey Minyard <minyard@....org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Corey Minyard <cminyard@...sta.com>,
        openipmi-developer@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 03/10] ipmi_si: Utilize temporary variable to hold
 device pointer

On Tue, Mar 30, 2021 at 09:16:42PM +0300, Andy Shevchenko wrote:
> By one of the previous clean up change we got a temporary variable to hold
> a device pointer. It can be utilized in other calls in the ->probe() and
> save a bit of LOCs.

The description here isn't accurate, there is no previous change where a
temporary variable comes in.  This change adds the temporary variable.

This change is ok, but doesn't add much value.

-corey

> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/char/ipmi/ipmi_si_platform.c | 15 +++++++--------
>  1 file changed, 7 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c
> index 009563073d30..954c297b459b 100644
> --- a/drivers/char/ipmi/ipmi_si_platform.c
> +++ b/drivers/char/ipmi/ipmi_si_platform.c
> @@ -309,6 +309,7 @@ static int find_slave_address(struct si_sm_io *io, int slave_addr)
>  
>  static int acpi_ipmi_probe(struct platform_device *pdev)
>  {
> +	struct device *dev = &pdev->dev;
>  	struct si_sm_io io;
>  	acpi_handle handle;
>  	acpi_status status;
> @@ -318,21 +319,20 @@ static int acpi_ipmi_probe(struct platform_device *pdev)
>  	if (!si_tryacpi)
>  		return -ENODEV;
>  
> -	handle = ACPI_HANDLE(&pdev->dev);
> +	handle = ACPI_HANDLE(dev);
>  	if (!handle)
>  		return -ENODEV;
>  
>  	memset(&io, 0, sizeof(io));
>  	io.addr_source = SI_ACPI;
> -	dev_info(&pdev->dev, "probing via ACPI\n");
> +	dev_info(dev, "probing via ACPI\n");
>  
>  	io.addr_info.acpi_info.acpi_handle = handle;
>  
>  	/* _IFT tells us the interface type: KCS, BT, etc */
>  	status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp);
>  	if (ACPI_FAILURE(status)) {
> -		dev_err(&pdev->dev,
> -			"Could not find ACPI IPMI interface type\n");
> +		dev_err(dev, "Could not find ACPI IPMI interface type\n");
>  		return -EINVAL;
>  	}
>  
> @@ -349,10 +349,11 @@ static int acpi_ipmi_probe(struct platform_device *pdev)
>  	case 4: /* SSIF, just ignore */
>  		return -ENODEV;
>  	default:
> -		dev_info(&pdev->dev, "unknown IPMI type %lld\n", tmp);
> +		dev_info(dev, "unknown IPMI type %lld\n", tmp);
>  		return -EINVAL;
>  	}
>  
> +	io.dev = dev;
>  	io.regsize = DEFAULT_REGSIZE;
>  	io.regshift = 0;
>  
> @@ -376,9 +377,7 @@ static int acpi_ipmi_probe(struct platform_device *pdev)
>  
>  	io.slave_addr = find_slave_address(&io, io.slave_addr);
>  
> -	io.dev = &pdev->dev;
> -
> -	dev_info(io.dev, "%pR regsize %d spacing %d irq %d\n",
> +	dev_info(dev, "%pR regsize %d spacing %d irq %d\n",
>  		 res, io.regsize, io.regspacing, io.irq);
>  
>  	request_module("acpi_ipmi");
> -- 
> 2.30.2
>