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Date: Wed, 20 Feb 2008 20:32:58 +0000 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: akpm@...l.org, linux-kernel@...r.kernel.org Subject: [PATCH] viocons: BKL locking For some weird reason I can't ascertain (translation "I think its broken") the viocons driver calls directly into the n_tty ldisc code even if another ldisc is in use. It'll probably break if you do that but I'm just fixing the locking and adding a comment that its horked. Signed-off-by: Alan Cox <alan@...hat.com> diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.25-rc2-mm1/drivers/char/viocons.c linux-2.6.25-rc2-mm1/drivers/char/viocons.c --- linux.vanilla-2.6.25-rc2-mm1/drivers/char/viocons.c 2008-02-19 11:01:44.000000000 +0000 +++ linux-2.6.25-rc2-mm1/drivers/char/viocons.c 2008-02-20 11:49:24.000000000 +0000 @@ -704,8 +704,11 @@ case KDSKBLED: return 0; } - - return n_tty_ioctl(tty, file, cmd, arg); + /* FIXME: WTF is this being called for ??? */ + lock_kernel(); + ret = n_tty_ioctl(tty, file, cmd, arg); + unlock_kernel(); + return ret; } /* -- 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/
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