Subject: kern/37091: lpt driver needs to be spinlocked
To: None <firstname.lastname@example.org, email@example.com,>
From: None <firstname.lastname@example.org>
Date: 10/09/2007 12:55:00
>Synopsis: lpt driver needs to be spinlocked
>Arrival-Date: Tue Oct 09 12:55:00 +0000 2007
>Originator: Andrew Doran
>Release: NetBSD 4.99.32
The NetBSD Project
lptintr can be called at very high priority (above IPL_SCHED).
Interrupts above IPL_VM should not take the kernel lock, and
interrupts above IPL_SCHED must not take the kernel lock.
The lpt driver needs to be spinlocked, at least WRT to lptintr().