[Polylactic_acid]

You can't just drop leaked code in to the kernel due to legal reasons. And even if the vendor does provide an open source dump of the source you still can't just drop it in to the kernel because it will not meet the code quality standards for linux. Vendors just hack it until it works and call it a day since they don't have to worry about unmaintainable code if they never plan to maintain it.

[corty]

You definitely can drop crappy drivers to the kernel devs for later improvement as somebody else's problem. It is called "staging".