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

[Lothar Waßmann]

Hi,

Sascha Hauer writes:
> 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?
> 
I'm using it around 100 times a day (with a 100us timeout)...


Lothar Waßmann
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