On Tue, Dec 04, 2012 at 10:54:54AM +0800, 张忠山 wrote: > When write a command function do_xxx. > > When all right it should return zero. > > But when error, It should return a negtive value or a positive value? > And what difference between neg-val and pos-val? Traditionally only positive error values were supported. This was changed recently so you can return negative error codes now. The difference is that with negative error values barebox will print a string representation of the error code. If that's suitable for your command I suggest to return negative codes. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
