Re: [PATCH v2] PCI: Remove fixed parameter in pci_iov_resource_bar()

[Bjorn Helgaas <bhelgaas@google.com>]

On Tue, Nov 11, 2014 at 08:04:50AM -0700, Myron Stowe wrote:
> pci_iov_resource_bar() always sets its 'pci_bar_type' parameter to
> 'pci_bar_unknown'.  Drop the parameter and just use 'pci_bar_unknown'
> directly in the callers.
> 
> No functional change intended.
> 
> Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
> Cc: Chris Wright <chrisw@sous-sol.org>
> Cc: Yu Zhao <yuzhao@google.com>

I replaced the v1 patch with this one to fix the build error:

drivers/pci/pci.c:4184:9: error: too few arguments to function 'pci_iov_resource_bar'

Thanks!

> ---
>  drivers/pci/iov.c |   11 +++--------
>  drivers/pci/pci.c |    3 ++-
>  drivers/pci/pci.h |    6 ++----
>  3 files changed, 7 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
> index 4d109c0..4b3a4ea 100644
> --- a/drivers/pci/iov.c
> +++ b/drivers/pci/iov.c
> @@ -479,20 +479,16 @@ void pci_iov_release(struct pci_dev *dev)
>   * pci_iov_resource_bar - get position of the SR-IOV BAR
>   * @dev: the PCI device
>   * @resno: the resource number
> - * @type: the BAR type to be filled in
>   *
>   * Returns position of the BAR encapsulated in the SR-IOV capability.
>   */
> -int pci_iov_resource_bar(struct pci_dev *dev, int resno,
> -			 enum pci_bar_type *type)
> +int pci_iov_resource_bar(struct pci_dev *dev, int resno)
>  {
>  	if (resno < PCI_IOV_RESOURCES || resno > PCI_IOV_RESOURCE_END)
>  		return 0;
>  
>  	BUG_ON(!dev->is_physfn);
>  
> -	*type = pci_bar_unknown;
> -
>  	return dev->sriov->pos + PCI_SRIOV_BAR +
>  		4 * (resno - PCI_IOV_RESOURCES);
>  }
> @@ -510,13 +506,12 @@ int pci_iov_resource_bar(struct pci_dev *dev, int resno,
>  resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno)
>  {
>  	struct resource tmp;
> -	enum pci_bar_type type;
> -	int reg = pci_iov_resource_bar(dev, resno, &type);
> +	int reg = pci_iov_resource_bar(dev, resno);
>  
>  	if (!reg)
>  		return 0;
>  
> -	 __pci_read_base(dev, type, &tmp, reg);
> +	 __pci_read_base(dev, pci_bar_unknown, &tmp, reg);
>  	return resource_alignment(&tmp);
>  }
>  
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 625a4ac..7bf2465 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -4180,7 +4180,8 @@ int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
>  		return dev->rom_base_reg;
>  	} else if (resno < PCI_BRIDGE_RESOURCES) {
>  		/* device specific resource */
> -		reg = pci_iov_resource_bar(dev, resno, type);
> +		*type = pci_bar_unknown;
> +		reg = pci_iov_resource_bar(dev, resno);
>  		if (reg)
>  			return reg;
>  	}
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index 0601890..a0905a0 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -251,8 +251,7 @@ static inline void pci_restore_ats_state(struct pci_dev *dev)
>  #ifdef CONFIG_PCI_IOV
>  int pci_iov_init(struct pci_dev *dev);
>  void pci_iov_release(struct pci_dev *dev);
> -int pci_iov_resource_bar(struct pci_dev *dev, int resno,
> -			 enum pci_bar_type *type);
> +int pci_iov_resource_bar(struct pci_dev *dev, int resno);
>  resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
>  void pci_restore_iov_state(struct pci_dev *dev);
>  int pci_iov_bus_range(struct pci_bus *bus);
> @@ -266,8 +265,7 @@ static inline void pci_iov_release(struct pci_dev *dev)
>  
>  {
>  }
> -static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
> -				       enum pci_bar_type *type)
> +static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno)
>  {
>  	return 0;
>  }
>