linux-kernel - Re: [PATCH 2/3] PCI/sysfs: Use __free() in reset_method

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Message-ID: <Zx_Pt2ObNKIS8cu2@kbusch-mbp>
Date: Mon, 28 Oct 2024 11:53:59 -0600
From: Keith Busch <kbusch@...nel.org>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] PCI/sysfs: Use __free() in reset_method_store()

On Mon, Oct 28, 2024 at 07:40:45PM +0200, Ilpo Järvinen wrote:
> @@ -1430,7 +1431,7 @@ static ssize_t reset_method_store(struct device *dev,
>  				  const char *buf, size_t count)
>  {
>  	struct pci_dev *pdev = to_pci_dev(dev);
> -	char *options, *tmp_options, *name;
> +	char *tmp_options, *name;
>  	int m, n;
>  	u8 reset_methods[PCI_NUM_RESET_METHODS] = { 0 };
>  
> @@ -1445,7 +1446,7 @@ static ssize_t reset_method_store(struct device *dev,
>  		return count;
>  	}
>  
> -	options = kstrndup(buf, count, GFP_KERNEL);
> +	char *options __free(kfree) = kstrndup(buf, count, GFP_KERNEL);

We should avoid mixing declarations with code. Please declare it with
the cleanup attribute at the top like before, and just initialize it to
NULL.