Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: [PATCH v6 7/8, needs improvement] hid: add suspend/resume hooks for hid drivers | Date | Sun, 11 Apr 2010 22:27:32 +0200 |
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Am Sonntag, 11. April 2010 20:40:02 schrieb Bruno Prémont: > On Sun, 11 April 2010 Jiri Kosina <jkosina@suse.cz> wrote: > > > As far as I understand the code, in auto-suspend case if the driver > > > sends commands to the device it will have to call usbhid_wait_io(). > > > Please correct me if I'm wrong! > > > > It's not needed. There is a queuing mechanism in place on > > 'resumption_waker' workqueue. > > So the driver is not allowed to ask the device to do something > at auto-suspend time (as that would abort the auto-suspension).
From within suspend()?
Generally if the driver wants to talk to a device that's a good reason to wake up a device.
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