linux-kernel - Re: [PATCH 1/2] PCI: Make pcim_request_all

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Message-ID: <20240731200207.GA78649@bhelgaas>
Date: Wed, 31 Jul 2024 15:02:07 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Philipp Stanner <pstanner@...hat.com>
Cc: Damien Le Moal <dlemoal@...nel.org>, Niklas Cassel <cassel@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH 1/2] PCI: Make pcim_request_all_regions() a public
 function

On Wed, Jul 31, 2024 at 02:34:54PM +0200, Philipp Stanner wrote:
> In order to remove the deprecated function
> pcim_iomap_regions_request_all(), a few drivers need an interface to
> request all BARs a PCI-Device offers.
> 
> Make pcim_request_all_regions() a public interface.

pcim_iomap_regions_request_all() is only used by a dozen or so
drivers.  Can we convert them all at once to consolidate reviewing
them?  Or are the others harder so we have to do this piece-meal?

> Signed-off-by: Philipp Stanner <pstanner@...hat.com>
> ---
>  drivers/pci/devres.c | 3 ++-
>  include/linux/pci.h  | 1 +
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/devres.c b/drivers/pci/devres.c
> index 3780a9f9ec00..0ec2b23e6cac 100644
> --- a/drivers/pci/devres.c
> +++ b/drivers/pci/devres.c
> @@ -932,7 +932,7 @@ static void pcim_release_all_regions(struct pci_dev *pdev)
>   * desired, release individual regions with pcim_release_region() or all of
>   * them at once with pcim_release_all_regions().
>   */
> -static int pcim_request_all_regions(struct pci_dev *pdev, const char *name)
> +int pcim_request_all_regions(struct pci_dev *pdev, const char *name)
>  {
>  	int ret;
>  	int bar;
> @@ -950,6 +950,7 @@ static int pcim_request_all_regions(struct pci_dev *pdev, const char *name)
>  
>  	return ret;
>  }
> +EXPORT_SYMBOL(pcim_request_all_regions);
>  
>  /**
>   * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 4cf89a4b4cbc..5b5856ba63e1 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -2289,6 +2289,7 @@ static inline void pci_fixup_device(enum pci_fixup_pass pass,
>  				    struct pci_dev *dev) { }
>  #endif
>  
> +int pcim_request_all_regions(struct pci_dev *pdev, const char *name);
>  void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
>  void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
>  void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
> -- 
> 2.45.2
>