Thread (4 messages) 4 messages, 3 authors, 2008-06-28

Re: [rft]power management for usbtouch

From: Oliver Neukum <hidden>
Date: 2008-06-27 20:57:39

Am Freitag 27 Juni 2008 22:51:47 schrieben Sie:
quoted
quoted
Ah, so it resumes the device even if it was not autosuspended but
suspended for another reason?
The other reason is either system wide, in which case nobody can call open,
or it is forcibly suspended via sysfs, causing usb_submit_urb() to fail later
on.
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. There is no behavior pleasing everybody.

	Regards
		Oliver

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