On Mon, Jan 20, 2020 at 07:38:29PM +0800, lijiazi wrote:

Add two device node flags, and use OF_DEVICE_NODE_FLAG_MAX instead
of sizeof("xxxx").

...

 			tbuf[1] = of_node_check_flag(dn, OF_DETACHED) ? 'd' : '-';
 			tbuf[2] = of_node_check_flag(dn, OF_POPULATED) ? 'P' : '-';
 			tbuf[3] = of_node_check_flag(dn, OF_POPULATED_BUS) ? 'B' : '-';

-			tbuf[4] = 0;

This is fine to leave untouched. See below.

+			tbuf[4] = of_node_check_flag(dn, OF_OVERLAY) ? 'O' : '-';
+			tbuf[5] = of_node_check_flag(dn, OF_OVERLAY_FREE_CSET) ? 'F' : '-';

These two should be part of patch 1, which in turn should be last in the series.

+			tbuf[OF_DEVICE_NODE_FLAG_MAX] = 0;

This one also, but in a form of explicit number, if you afraid of problems
here, we may add something like

	BUILD_BUG_ON(OF_DEVICE_NODE_FLAG_MAX < ...);

where ... depends on amount of flags we print here.

-- 
With Best Regards,
Andy Shevchenko