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Message-ID: <alpine.LFD.0.98.0706191443460.3593@woody.linux-foundation.org>
Date: Tue, 19 Jun 2007 14:48:44 -0700 (PDT)
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Mariusz Kozlowski <m.kozlowski@...land.pl>
cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: And now for something _totally_ different: Linux v2.6.22-rc5
On Tue, 19 Jun 2007, Mariusz Kozlowski wrote:
>
> MAINTAINERS says riscom8 is orphaned so not sure
> if anybody cares. Spotted this when playing with modprobe
> walking /lib/modules/`uname -r`/kernel in a loop ;)
Oh wow.
I wonder why it does that. The code literally does:
save_flags(flags);
cli();
tty_unregister_driver(riscom_driver);
put_tty_driver(riscom_driver);
restore_flags(flags);
and I don't see the point.
(And that's what then causes the warning: tty_unregister_driver will
eventually get a mutex, but the caller had disabled hardware interrupts..
I see absolutely *zero* reason for that whole save_flags/cli/restore_flags
dance at all, so I think the right thing to do is to just remove it.
I'm Cc'ing Alan, in case he cares.
Mariusz, if you actually *use* the dang thing, and really care, you can
send me a tested patch. I can pretty much guarantee that removing those
irq games won't make things any worse, but no way am I going to just
remove it on my own without any users or any testing.
Linus
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