Re: [Linux-fbdev-devel] SM501: core (mfd) driver

[Arjan v. de V. <ar...@in...>]

On Wed, 2006-12-13 at 17:51 +0000, Ben Dooks wrote:
> > > +
> > > +	writel(mode, sm->regs + SM501_POWER_MODE_CONTROL);
> > > +
> > > +	dev_dbg(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n",
> > > +		gate, clock, mode);
> > > +
> > > +	msleep(16);
> > 
> > you're missing a PCI posting flush here
> > (if you don't know what this is please ask)
> 
> Is this a read from an device register to cause the PCI writes
> to happen?

yup

>  Would reading SM501_POWER_MODE_CONTROL be ok, or does
> it require a different register?

any register is ok, you can read the same one just fine.


greetings,
   Arjan van de Ven
-- 
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