Maybe PC hardware vendors has some automated kernel testing. I think it's different with embedded. The SoC company I worked for a couple of years ago didn't have anything like that.
That's because SoC companies for the most part simply never update the kernel. Whatever kernel they were using when the chip tapes out is the kernel they're still using when the products hit EOL. Wireless routers with Broadcom 802.11ac are all running a kernel branch from 2010.
wtallis|8 years ago