Linux kernel license enforcement is very lax. Most binary blob drivers probably violate GPL in one way or the other, as do the "GPL-condom" half-open-source "drivers" that do most of their stuff in a userspace blob.
When asked about it most kernel developers point to closed-door negotiations that are being kept confidential. Usually also saying "trust us, we know what we are doing, we'll get more source opened our way".
Those who actually try to enforce GPL publically are ignored or shunned, e.g. Harald Welte/LaForge of gpl-violations.org
When asked about it most kernel developers point to closed-door negotiations that are being kept confidential. Usually also saying "trust us, we know what we are doing, we'll get more source opened our way".
Those who actually try to enforce GPL publically are ignored or shunned, e.g. Harald Welte/LaForge of gpl-violations.org