Let's say I am a manufacturer and I receive a bug report from a customer. How am I supposed to fix it? Submit a patch to LKML and tell the customer to wait for a new kernel version? That is absurd. So, I have to maintain an out-of-tree driver in any case. I want my customers to use the same driver in all kernel versions.What? You maintain a git repo, the same way anyone else doing kernel development does, and feed one branch to Linus and the other to your customers. This is really not even slightly rocket science, and git has plenty of tools to help keep the branches in sync.
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