From: https://www.linuxfoundation.org/en/Kernel_Driver_Statement

Position Statement on Linux Kernel Modules
 
 June 2008
 
 
 We, the undersigned Linux kernel developers, consider any
closed-source Linux kernel module or driver to be harmful and
undesirable. We have repeatedly found them to be detrimental to Linux
users, businesses, and the greater Linux ecosystem. Such modules
negate the openness, stability, flexibility, and maintainability of
the Linux development model and shut their users off from the
expertise of the Linux community. Vendors that provide closed-source
kernel modules force their customers to give up key Linux advantages
or choose new vendors. Therefore, in order to take full advantage of
the cost savings and shared support benefits open source has to offer,
we urge vendors to adopt a policy of supporting their customers on
Linux with open-source kernel code.


We speak only for ourselves, and not for any company we might work for
today, have in the past, or will in the future.