[PATCH] agp: check if ndevs is zero before enabling node

[Greg KH]

On Thu, May 13, 2021 at 09:53:32PM +0800, Yiyuan GUO wrote:
> In function agp_3_5_enable from drivers/char/agp/isoch.c, the
> variable ndevs may remain zero if all AGP devices have type of
> "Bridge" or "Unclassified device".

Can that actually happen with real hardware?  Given the age of AGP code,
odds are if this could have happened, it would have by now :)

thanks,

greg k-h