Re: How to replace set_fs(KERNEL_DS) for a kernel 5.10.x module driver version
From: Greg KH <hidden>
Date: 2021-01-12 10:25:39
On Tue, Jan 12, 2021 at 09:55:01AM +0000, Jorge Fernandez Monteagudo wrote:
quoted
Patents have almost nothing to do with licenses, we have many things in the Linux kernel that are under a GPLv2 license that have patents issued for (and are actively enforced.) The GPL can, and does, work with the patent system, so if that's a reason that any company tries to give for not releasing kernel code, it's very misinformed.Well, I think the only the reason not to publish the code was because it's a driver for a custom hardware with no interest outside our department...
Doesn't matter, we take drivers for anything, as long as someone is using the hardware.
quoted
Anyway, off-topic but I figured I would try to clear that up.I was wondering that with the current limitation, there is no way to call functions in a driver as the cdc-acm from other drivers as the dummy I sent. Maybe our driver was designed the way is to avoid latencies from context switching if the code were in userspace... It's only a guess...
You are dealing with USB speeds and latencies, kernel syscall issues are the least of your worries here. thanks, greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies