Re: [PATCH] [media] v4l: omap4iss: Remove VIDEO_OMAP4_DEBUG

[Paul Bolle <pebolle@tiscali.nl>]

Laurent,

On Mon, 2014-02-10 at 15:13 +0100, Laurent Pinchart wrote:
> On Sunday 09 February 2014 16:09:37 Paul Bolle wrote:
> > Commit d632dfefd36f ("[media] v4l: omap4iss: Add support for OMAP4
> > camera interface - Build system") added a Kconfig entry for
> > VIDEO_OMAP4_DEBUG. But nothing uses that symbol.
> > 
> > This entry was apparently copied from a similar entry for "OMAP 3
> > Camera debug messages". But a corresponding Makefile line is missing.
> > Besides, the debug code also depends on a mysterious ISS_ISR_DEBUG
> > macro. This Kconfig entry can be removed.
> 
> What about adding the associated Makefile line instead to #define DEBUG when 
> VIDEO_OMAP4_DEBUG is selected, as with the OMAP3 ISP driver ?
>  
> > Someone familiar with the code might be able to say what to do with the
> > code depending on the DEBUG and ISS_ISR_DEBUG macros.
> 
> ISS_ISR_DEBUG is expected to be set by manually modifying the source code, as 
> it prints lots of messages in interrupt context.

Which renders the DEBUG macro pointless. Or does the code use some
dev_dbg()-like magic, which is only triggered if the DEBUG macro is set?

Thanks,


Paul Bolle