Re: [rft]power management for usbtouch
From: Oliver Neukum <oliver@neukum.org>
Date: 2008-06-28 10:52:11
Am Freitag 27 Juni 2008 23:28:30 schrieb Ville Syrjälä:
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Which will also fail the open() itself. Isn't that bad? That is, you can suspend an already open device without the users the device noticing but you can't open it if you happen to suspend it at just the right time. That doesn't strike me as good behaviour for a driver.Root can also unbind the driver.Sure, but in that case the behavior is consistent ie. the device disappears.
Sorry, I chose a bad example. Root can do stupid things like sending control requests that change the configuration, setting or address of a device. The effects are undefined and will differ from driver to driver and open or closedness. Forcibly suspending a device is a testing feature. If root abuses it, he'll have to take the consequences. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html