On Wed, Mar 21, 2012 at 2:29 PM, Martin Mokrejs
<mmokrejs@fold.natur.cuni.cz> wrote:
> Hi,
>  I am not sure whether this is a bug or feature but I have problems
> getting my USB3.0 PCI express card detected in my Dello Vostro 3550 laptop.
> It appears to me after removal of the card there is about 60s window when
> the PCI INT is still kept (not released). After that time it is released,
> no matter that I for example meanwhile re-plugged the card already into
> the slot.
>
>  After having found this I can confirm that my express card gets detected
> if I insert it in after at least 60 seconds since its previous removal.
>
>  I have attached the logs from my attempts. Would anybody please confirm
> this is the intended behavior? Or is that because USB delay of the PCI INT
> resource after cards removal? Could I be, as a user, informed that I am not
> supposed to re-insert the card in a whatever time window?
>
> Either way, thank you for comments,

can you please post whole boot log ?

wonder if your slot is supporting surprise removal.. if not, attached
patch could remove some
noise about

Mar 20 21:04:17 vostro kernel: pciehp 0000:00:1c.7:pcie04: Card not
present on Slot(7)
Mar 20 21:04:18 vostro kernel: pciehp 0000:00:1c.7:pcie04: Card
present on Slot(7)
Mar 20 21:04:19 vostro kernel: pciehp 0000:00:1c.7:pcie04: Card not
present on Slot(7)
Mar 20 21:04:20 vostro kernel: pciehp 0000:00:1c.7:pcie04: Card
present on Slot(7).

also we have some patches in pci/linux-next, that will power off pcie
link after removal.

so please check if that tree is going to help or wait for kernel 3.4-rc1.

      Yinghai