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    SubjectRe: [bug 2.5.69] xirc2ps_cs, irq 3: nobody cared, shutdown hangs
    On Sun, 11 May 2003, Jeff Garzik wrote:

    > 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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