Date: Tue, 24 Nov 2015 15:39:14 -0600
From: Bjorn Helgaas <helgaas@kernel.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel@lists.infradead.org, Jisheng Zhang <jszhang@marvell.com>,
        wangzhou1@hisilicon.com, bhelgaas@google.com,
        linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI: hisi: fix deferred probing
Message-ID: <20151124213914.GE17377@localhost>
References: <1447329728-1589-1-git-send-email-jszhang@marvell.com>
 <4417267.EzK5DAjM5p@wuerfel>
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On Thu, Nov 12, 2015 at 01:21:37PM +0100, Arnd Bergmann wrote:
> The hisi_pcie_probe function is incorrectly marked as __init, as Kconfig
> tells us:
> 
> WARNING: drivers/pci/host/built-in.o(.data+0x7780): Section mismatch in reference from the variable hisi_pcie_driver to the function .init.text:hisi_pcie_probe()
> 
> If the probe for this device gets deferred past the point where __init
> functions are removed, or the device is unbound and then reattached to
> the driver, we branch into uninitialized memory, which is bad.
> 
> This removes the __init annotation.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

We merged pcie-hisi.c in the v4.4 merge window, so I applied this to
for-linus for v4.4 with ack/reviewed-by from Zhou and Hanjun, thanks!

> diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/host/pcie-hisi.c
> index 35457ecd8e70..163671a4f798 100644
> --- a/drivers/pci/host/pcie-hisi.c
> +++ b/drivers/pci/host/pcie-hisi.c
> @@ -111,7 +111,7 @@ static struct pcie_host_ops hisi_pcie_host_ops = {
>  	.link_up = hisi_pcie_link_up,
>  };
>  
> -static int __init hisi_add_pcie_port(struct pcie_port *pp,
> +static int hisi_add_pcie_port(struct pcie_port *pp,
>  				     struct platform_device *pdev)
>  {
>  	int ret;
> @@ -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;
> 
> --
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