On Thu, 2013-07-11 at 17:43 +0800, Yijing Wang wrote:
> Introduce PCIe Ext Capability Device Serial Number support,
> so we can use the unique device serial number to identify
> the physical device. During system suspend, if the PCIe
> device was removed and inserted a new same device, after
> system resume there is no good way to identify it, maybe
> Device Serial Number is a good choice if device support.
>
> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
> ---
> drivers/pci/pci.c | 27 +++++++++++++++++++++++++++
> drivers/pci/probe.c | 2 ++
> include/linux/pci.h | 3 +++
> 3 files changed, 32 insertions(+), 0 deletions(-)
>
[...]
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 0fd1f15..10d190b 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -342,6 +342,7 @@ struct pci_dev {
> struct list_head msi_list;
> struct kset *msi_kset;
> #endif
> + u64 sn; /* device serieal number, 0 if not support */
Typo: serieal
> struct pci_vpd *vpd;
> #ifdef CONFIG_PCI_ATS
> union {
[...]
Paul Bolle
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