https://bugzilla.kernel.org/show_bug.cgi?id=40952
--- Comment #4 from Linus Torvalds <torva...@linux-foundation.org> 2011-08-24
21:57:45 ---
On Wed, Aug 24, 2011 at 2:04 PM, <bugzilla-dae...@bugzilla.kernel.org> wrote:
>
> --- Comment #3 from Michel Dänzer <mic...@daenzer.net> 2011-08-24 21:03:48
> ---
> From Elimar Riesebieter (riesebie at lxtec.de):
>
> bisecting brought me to commit
> 288d5abec8314ae50fe6692f324b0444acae8486. Reverting seems to work as
> microcode is loaded with compiled in firmware and radeon kms driver.
Grr.
So _request_firmware() does this:
if (WARN_ON(usermodehelper_is_disabled())) {
dev_err(device, "firmware: %s will not be loaded\n", name);
return -EBUSY;
}
which is reasonable, but it does mean that it will warn even if the
firmware is built into the kernel.
On the one hand, that's really nice, because it implies a driver does
a firmware load too early, at a point where it cannot do the generic
firmware load.
On the other hand, it sucks, because it does disallow this situation
that used to work, now that we actually do the sane thing and don't
allow usermode helpers before init has been set up.
So I bet the attached patch fixes the R100 problem, but I'm not 100%
happy with it.
Comments?
Linus
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