[PATCH v5 07/11] of: overlay: add FIT image overlay support

[Marco Felsch]

Hi Sascha,

On 25-08-19, Sascha Hauer wrote:
> On Mon, Aug 18, 2025 at 07:26:15PM +0200, Marco Felsch wrote:

...

> > +static int of_overlay_apply_fit(struct device_node *root, struct fit_handle *fit,
> > +				struct device_node *config)
> > +{
> > +	const char *name = config->name;
> > +	struct device_node *overlay;
> > +	unsigned long ovl_sz;
> > +	const void *ovl;
> > +	int ret;
> > +
> > +	if (!of_overlay_matches_filter(name, NULL))
> > +		return 0;
> 
> Can we have a
> 	pr_debug("FIT config \"%s\" doesn't match filter \"%s\"\n",
> 		name, of_overlay_filter);
> 
> Here?
> 
> > +
> > +	ret = fit_open_image(fit, config, "fdt", &ovl, &ovl_sz);
> > +	if (ret)
> > +		return ret;
> > +
> > +	overlay = of_unflatten_dtb(ovl, ovl_sz);
> 
> 	if (IS_ERR(overlay))
> 		...
> 
> > +
> > +	if (!of_overlay_matches_filter(NULL, overlay)) {
> > +		ret = 0;
> > +		goto out;
> > +	}
> 
> I think a pr_debug printing the reason would be appropriate here as
> well.

Instead of adding it here I adapted the three cases in
of_overlay_matches_filter() which didn't had a pr_debug() yet to cover
all possible cases.

I also added pr_debug("Process FIT config \"%s\"\n", name); at the
beginning of of_overlay_apply_fit().

Regards,
  Marco