linux-kernel - Re: [PATCH] PCI: generic: stop hiding pci_host_common

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Date:   Wed, 29 Mar 2017 15:05:36 +0200
From:   Tomasz Nowicki <tn@...ihalf.com>
To:     Arnd Bergmann <arnd@...db.de>, Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Jayachandran C <jchandra@...adcom.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Dongdong Liu <liudongdong3@...wei.com>,
        Christopher Covington <cov@...eaurora.org>,
        Duc Dang <dhdang@....com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: generic: stop hiding pci_host_common_probe
 declaration

Hi Arnd,

On 21.03.2017 16:59, Arnd Bergmann wrote:
> When pci_host_common_probe() was moved into a separate module, the #ifdef around
> the declaration was left in the header file, which can lead to build errors in
> some configurations:
>
> drivers/pci/host/pci-thunder-pem.c: In function 'thunder_pem_probe':
> drivers/pci/host/pci-thunder-pem.c:412:9: error: implicit declaration of function 'pci_host_common_probe';did you mean 'pci_host_bridge_priv'? [-Werror=implicit-function-declaration]
>
> The ifdef serves no real purpose anyway, so we can just remove it.
>
> Fixes: 4e64dbe226e7 ("PCI: generic: Expose pci_host_common_probe() for use by other drivers")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  include/linux/pci-ecam.h | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
> index f0d2b9451270..92a73847e1d3 100644
> --- a/include/linux/pci-ecam.h
> +++ b/include/linux/pci-ecam.h
> @@ -68,9 +68,7 @@ extern struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */
>  extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
>  #endif
>
> -#ifdef CONFIG_PCI_HOST_GENERIC
>  /* for DT-based PCI controllers that support ECAM */
>  int pci_host_common_probe(struct platform_device *pdev,
>  			  struct pci_ecam_ops *ops);
>  #endif
> -#endif
>

Thanks for fixing this.

Reviewed-by: Tomasz Nowicki <tn@...ihalf.com>
Tested-by: Tomasz Nowicki <tn@...ihalf.com>

Tomasz