Re: ehci dynamic debug problem

Jason Baron
2012-04-16T18:10:41Z

On Mon, Apr 16, 2012 at 06:41:39PM +0200, Johannes Stezenbach wrote:
> On Mon, Apr 16, 2012 at 11:54:24AM -0400, Jason Baron wrote:
> > On Fri, Apr 13, 2012 at 09:03:11PM +0200, Johannes Stezenbach wrote:
> > >
> > > Does dynamic debug offer an "is the message two lines below enabled" test?
> > >
> >
> > Sorry was away for a bit...
> >
> > dynamic debug doesn't offer any is enabled test, its hidden from the
> > user. That said, in this case, you can delay the printing to the buffer
> > with:
> ...
> > + ehci_dbg (ehci, "%s\n", dbg_port_buf (_buf, sizeof _buf, label, port, status)); \
>
> I think arguments are evaluated before dev_dbg is called so this
> won't help.
>
>

I looked at the disassembly - and this argument was in fact *not* evaluated
before the call. So I think this approach is worthwhile.

Thanks,

-Jason