imx sgtl5000:BUG: scheduling while atomic: speaker-test/1225/0x00000003

Sascha Hauer s.hauer at pengutronix.de
Thu Apr 26 03:36:11 EDT 2012


On Thu, Apr 26, 2012 at 09:29:17AM +0200, Lothar Waßmann wrote:
> Hi,
> 
> > > -	init_completion(&sdmac->done);
> > > +	unsigned long timeout = 500;
> > I'm not sure. Did you test 500us is enough for loading firmware?
> >
> Channel 0 is not used for actual data transfer but for some internal
> housekeeping. Thus the timeout is independent from the time required
> for the actual data transfer.
> I haven't seen any timeout even with the timeout set to 100us.
> Usually it takes 3 to 4 us to complete.

It *is* used to load the firmware. Have you tested your patch with
actually loading a firmware?

Sascha

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