linux-kernel - Re: [PATCH v3 13/32] PCI/MIPS: use PCIe capabilities access functions to simplify implementation

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Date:	Mon, 13 Aug 2012 14:40:04 -0700
From:	David Daney <ddaney.cavm@...il.com>
To:	Jiang Liu <liuj97@...il.com>, Ralf Baechle <ralf@...ux-mips.org>
CC:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Don Dutile <ddutile@...hat.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Taku Izumi <izumi.taku@...fujitsu.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>,
	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>,
	Yijing Wang <wangyijing@...wei.com>,
	linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v3 13/32] PCI/MIPS: use PCIe capabilities access functions
 to simplify implementation

On 08/01/2012 08:54 AM, Jiang Liu wrote:
> From: Jiang Liu<jiang.liu@...wei.com>
>
> Use PCIe capabilities access functions to simplify PCIe MIPS implementation.
>
> Signed-off-by: Jiang Liu<liuj97@...il.com>

Acked-by: David Daney <david.daney@...ium.com>

> ---
>   arch/mips/pci/pci-octeon.c |   15 +++++----------
>   1 file changed, 5 insertions(+), 10 deletions(-)
>
> diff --git a/arch/mips/pci/pci-octeon.c b/arch/mips/pci/pci-octeon.c
> index 52a1ba7..aaed2ad 100644
> --- a/arch/mips/pci/pci-octeon.c
> +++ b/arch/mips/pci/pci-octeon.c
> @@ -117,16 +117,11 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
>   	}
>
>   	/* Enable the PCIe normal error reporting */
> -	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
> -	if (pos) {
> -		/* Update Device Control */
> -		pci_read_config_word(dev, pos + PCI_EXP_DEVCTL,&config);
> -		config |= PCI_EXP_DEVCTL_CERE; /* Correctable Error Reporting */
> -		config |= PCI_EXP_DEVCTL_NFERE; /* Non-Fatal Error Reporting */
> -		config |= PCI_EXP_DEVCTL_FERE;  /* Fatal Error Reporting */
> -		config |= PCI_EXP_DEVCTL_URRE;  /* Unsupported Request */
> -		pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, config);
> -	}
> +	config = PCI_EXP_DEVCTL_CERE; /* Correctable Error Reporting */
> +	config |= PCI_EXP_DEVCTL_NFERE; /* Non-Fatal Error Reporting */
> +	config |= PCI_EXP_DEVCTL_FERE;  /* Fatal Error Reporting */
> +	config |= PCI_EXP_DEVCTL_URRE;  /* Unsupported Request */
> +	pci_pcie_capability_change_word(dev, PCI_EXP_DEVCTL, config, 0);
>
>   	/* Find the Advanced Error Reporting capability */
>   	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);

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