linux-kernel - Re: [RFC PATCH 00/13] firmware loader: introduce cache/uncache firmware

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CA+55aFypmnk8S4JkLui1Z7JxKae=-k88K-wEP9xDwrf1LOX-Vw@mail.gmail.com>
Date:	Tue, 24 Jul 2012 10:53:53 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ming Lei <ming.lei@...onical.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Borislav Petkov <borislav.petkov@....com>,
	linux-kernel@...r.kernel.org, Matthew Garrett <mjg@...hat.com>
Subject: Re: [RFC PATCH 00/13] firmware loader: introduce cache/uncache firmware

On Tue, Jul 24, 2012 at 10:47 AM, Ming Lei <ming.lei@...onical.com> wrote:
>
> I remembered that Matthew objected caching firmware because he thought
> it can't solve the isight camera problem after warm reset. But now,
> this specific
> problem can be solved easily by letting its driver defer probe.

I really think the isight thing is a totally different thing entirely.

And quite frankly, that's just a BUG in the USB implementation. If the
USB ID changes, it shouldn't be considered a "resume" thing at all,
but a probe thing, and that should not be done in early resume - it
should be done *after* the resume is done.

The fact that USB confuses resuming existing devices and probing new
ones is just an implementation issue, and is a bug.

                       Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/