> If this patch works, it's mainly a signal to dig deeper.
> If netif_device_present() returns false, we think the hardware has
> disappeared. So that implies a bug in calling netif_device_detach() no
> a bug in the irq handler return value.
> This is _especially_ true for pcmcia, even more than pci. PCI ejects
> (including cardbus) are electrically safe, whereas pcmcia is different.
> If pcmcia hardware disappears on you, you _really_ don't want to be
> bitbanging its ports.
Could possibly be a problem in CardServices, it appears to defer free'ing
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