Re: [PATCH] request_firmware: skip timeout if userspace was not notified

From: david
Date: Sat Aug 04 2007 - 13:11:19 EST


On Sat, 4 Aug 2007, Javier Pello wrote:

I've been told that it's possible to have the kernel pull the firmware
off of an initrd (or was it initramfs, I keep confusing the two) without
having any userspace, just put the right file in the right place
(unfortunantly I've never gotten around to testing this) will this patch
break this feature?

Correct me if I'm wrong, but I understand that the way this works is having
the initramfs become an "early userspace", a filesystem that is mounted,
well, earlier during boot, so that it is available before drivers begin
to initialise (earlier: as a rootfs_initcall, as opposed to at the end of
the boot process), but that in all respects behaves as a fully-fledged root
filesystem. In particular, firmware should be requested from userspace in
the standard way, and the patch should not break anything. I would test
this to be sure, but I have absolutely no experience preparing an initramfs.

what I've been told is that with the drive built-in instead of modular you can create a filesystem that has only the firmware on it, nothing else, and have the kernel find and load it (no userspace software involved)

David Lang
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