linux-kernel - Re: [PATCH] PCI: hisi: Fix Section mismatch compilation warning for probe()

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Date:	Thu, 12 Nov 2015 13:21:02 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Jisheng Zhang <jszhang@...vell.com>, wangzhou1@...ilicon.com,
	bhelgaas@...gle.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: hisi: Fix Section mismatch compilation warning for probe()

On Thursday 12 November 2015 20:02:08 Jisheng Zhang wrote:
> Following compilation warning occurs when compiled with:
> CONFIG_DEBUG_SECTION_MISMATCH=y
> 
>  WARNING: drivers/pci/host/built-in.o(.data+0x308): Section mismatch in
>  reference from the variable hisi_pcie_driver to the function
>  .init.text:hisi_pcie_probe()
> 
> Fix it by dropping __init from hisi_pcie_probe().

The patch description should ideally say what the impact is here, not
only what the warning says.

> Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
> Fixes: 500a1d9a43e0 ("PCI: hisi: Add HiSilicon SoC Hip05 PCIe driver")
> ---
>  drivers/pci/host/pcie-hisi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/host/pcie-hisi.c
> index 35457ec..1cc0a21 100644
> --- a/drivers/pci/host/pcie-hisi.c
> +++ b/drivers/pci/host/pcie-hisi.c
> @@ -139,7 +139,7 @@ static int __init hisi_add_pcie_port(struct pcie_port *pp,
>         return 0;
>  }
>  
> -static int __init hisi_pcie_probe(struct platform_device *pdev)
> +static int hisi_pcie_probe(struct platform_device *pdev)
>  {
>         struct hisi_pcie *hisi_pcie;
>         struct pcie_port *pp;

This seems incomplete, you now get a new warning about hisi_add_pcie_port().

I did a similar patch yesterday, will follow up with my version.

	Arnd
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