linux-kernel - Re: [PATCH v2 1/1] PCI: Improve printout in pdev_sort

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Message-ID: <20241017121203.000003d8@Huawei.com>
Date: Thu, 17 Oct 2024 12:12:03 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
CC: Philipp Stanner <pstanner@...hat.com>, Bjorn Helgaas
	<bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/1] PCI: Improve printout in pdev_sort_resources()

On Thu, 17 Oct 2024 12:55:45 +0300
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com> wrote:

> Use pci_resource_name() helper in pdev_sort_resources() to print
> resources in user-friendly format. Also replace the vague "bogus
> alignment" with a more precise explanation of the problem.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> ---
> 
> v2:
> - Place colon after %s %pR to be consistent with other printouts
> - Replace vague "bogus alignment" with the exact cause
> 
>  drivers/pci/setup-bus.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
> index 23082bc0ca37..0fd286f79674 100644
> --- a/drivers/pci/setup-bus.c
> +++ b/drivers/pci/setup-bus.c
> @@ -134,6 +134,7 @@ static void pdev_sort_resources(struct pci_dev *dev, struct list_head *head)
>  	int i;
>  
>  	pci_dev_for_each_resource(dev, r, i) {
> +		const char *r_name = pci_resource_name(dev, i);
>  		struct pci_dev_resource *dev_res, *tmp;
>  		resource_size_t r_align;
>  		struct list_head *n;
> @@ -146,8 +147,8 @@ static void pdev_sort_resources(struct pci_dev *dev, struct list_head *head)
>  
>  		r_align = pci_resource_alignment(dev, r);
>  		if (!r_align) {
> -			pci_warn(dev, "BAR %d: %pR has bogus alignment\n",
> -				 i, r);
> +			pci_warn(dev, "%s %pR: alignment must not be zero\n",
> +				 r_name, r);
Why bother with local variable if only used here?
Absolutely fine if you have more code coming that uses it again though!

Otherwise seems sensible change.

>  			continue;
>  		}
>