On Tue, Dec 31, 2024 at 09:59:45AM -0500, Jate Sujjavanich wrote: > I have a device running the 4.19 LTS kernel which just went end of > life. It has some USB signal integrity issues which result in "clear > tt" loops until the bus can recover (if it can). This can result in > system hangs including with lsusb. > > Management would like for me to patch our Linux kernel to work around > the problem thinking that a kernel fix is much less costly than > deploying a hardware fix. There are some USB fixes in the upstream > which might help. But I think I will be without community support. > > What advice do you have? Upgrade to a newer, and properly supported, kernel version. 4.19 is already very old and obsolete and full of known security problems. If you stick to 4.19, you are on your own for all support and everything else. Good luck! greg k-h