linux-kernel - Re: ehci dynamic debug problem

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Message-ID: <20120416164139.GA14077@sig21.net>
Date:	Mon, 16 Apr 2012 18:41:39 +0200
From:	Johannes Stezenbach <js@...21.net>
To:	Jason Baron <jbaron@...hat.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: ehci dynamic debug problem

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.


Thanks
Johannes
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