> Does the existing serial driver submit URBs after the device is
> physically removed? (Like if an application still has an fd open when
> the device was removed)
Of course it does. _Any_ driver will do so. The window between
physical and logical disconnection is unavoidable, if only because
of the polling interval of the hub driver.
> Although, that may piss of the sysadmin. If the device is gone and no
> applications are using it, the driver should be able to be removed. But
> this is just a sysadmin user interface thing.
In a major way. We need stated rules on when drivers can be unloaded.
Besides, what are you to do if incrementing a usage count in
usb_submit_urb() fails ? By definition you cannot return to the driver.
Regards
Oliver
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