On 2013/10/11 13:49, Benjamin Herrenschmidt wrote:
> On Fri, 2013-09-06 at 14:30 -0600, Bjorn Helgaas wrote:
>> On Thu, Sep 05, 2013 at 03:55:27PM +0800, Yijing Wang wrote:
>>> Use pci_is_pcie() to simplify code.
>>>
>>> Acked-by: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
>>> Reviewed-by: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
>>> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
>>> Cc: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
>>> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
>>> Cc: Paul Mackerras <paulus@xxxxxxxxx>
>>> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
>>> Cc: linux-kernel@xxxxxxxxxxxxxxx
>>> ---
>>> arch/powerpc/kernel/eeh.c | 3 +--
>>> arch/powerpc/sysdev/fsl_pci.c | 2 +-
>>> 2 files changed, 2 insertions(+), 3 deletions(-)
>>
>> Ben, Paul, this has no dependencies on anything new to PCI or any
>> other patches in this series, so you can take it through the POWERPC
>> tree. If you don't want to do that, let me know and I can take it.
>>
>> If you want it:
>>
>> Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>
> It's also quite broken :-)
>
> See below:
>
>>> diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
>>> index 55593ee..6ebbe54 100644
>>> --- a/arch/powerpc/kernel/eeh.c
>>> +++ b/arch/powerpc/kernel/eeh.c
>>> @@ -189,8 +189,7 @@ static size_t eeh_gather_pci_data(struct eeh_dev *edev, char * buf, size_t len)
>>> }
>>>
>>> /* If PCI-E capable, dump PCI-E cap 10, and the AER */
>>> - cap = pci_find_capability(dev, PCI_CAP_ID_EXP);
>>> - if (cap) {
>>> + if (pci_is_pcie(dev)) {
>>> n += scnprintf(buf+n, len-n, "pci-e cap10:\n");
>>> printk(KERN_WARNING
>>> "EEH: PCI-E capabilities and status follow:\n");
>
> So we remove reading of "cap", but slightly further down the code does:
>
> for (i=0; i<=8; i++) {
> eeh_ops->read_config(dn, cap+4*i, 4, &cfg);
> n += scnprintf(buf+n, len-n, "%02x:%x\n", 4*i, cfg);
> printk(KERN_WARNING "EEH: PCI-E %02x: %08x\n", i, cfg);
> }
>
> Which actually *uses* the value of "cap" ... oops :-)
Hi Benjamin,
Thanks for your review and comments! I will update it at once.
Thanks!
Yijing.
>
>>> diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
>>> index 46ac1dd..5402a1d 100644
>>> --- a/arch/powerpc/sysdev/fsl_pci.c
>>> +++ b/arch/powerpc/sysdev/fsl_pci.c
>>> @@ -41,7 +41,7 @@ static void quirk_fsl_pcie_header(struct pci_dev *dev)
>>> u8 hdr_type;
>>>
>>> /* if we aren't a PCIe don't bother */
>>> - if (!pci_find_capability(dev, PCI_CAP_ID_EXP))
>>> + if (!pci_is_pcie(dev))
>>> return;
>>>
>>> /* if we aren't in host mode don't bother */
>>> --
>>> 1.7.1
>>>
>>>
>
>
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--
Thanks!
Yijing
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