Re: [PATCH 2/3] HID: usbhid: hid-core: submit queued urbs before suspend

Am Donnerstag, 17. November 2011, 12:23:49 schrieb Daniel Kurtz:

Unfortunately, this usually happens while the first LED request is
actually still being processed.  Thus when the completion handler tries
to submit the second LED request it fails, since REPORTED_IDLE is
already set!  This REPORTED_IDLE check failure causes the completion
handler to complete, however without clearing the CTRL_RUNNING flag.
This, in turn, means that the suspend() handler's wait_io() condition
is never satisfied, and instead it times out after 10 seconds, aborting
the original system suspend.

This patch changes the behavior to the following:
  (1) allow completion handler to finish submitting all queued URBs, even if
      REPORTED_IDLE is set.  This guarantees that all URBs queued before the
      hid-core suspend() call will be submitted before the system is
      suspended.

Hi,

why is this desirable? You'd want to requests to be executed at resumption.
A system suspend will alter the LED state anyway.

	Regards
		Oliver
-- 
- - - 
SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg) 
Maxfeldstraße 5                         
90409 Nürnberg 
Germany 
- - -