[PATCH] kexec: x86: i8259 shutdown: disable interrupts
authorEric W. Biederman <ebiederm@xmission.com>
Sat, 25 Jun 2005 21:57:43 +0000 (14:57 -0700)
committerLinus Torvalds <torvalds@ppc970.osdl.org>
Sat, 25 Jun 2005 23:24:46 +0000 (16:24 -0700)
commitcee5dab4856f51c5cad3aecc630ad0a4d2217a85
tree5798e045caf95519093d69609d7b8d2b20af4175
parent70adada4282b52130ef31c7722d3fd8d94dacbc2
[PATCH] kexec: x86: i8259 shutdown: disable interrupts

From: Eric W. Biederman <ebiederm@xmission.com>

This patch disables interrupt generation from the legacy pic on reboot.  Now
that there is a sys_device class it should not be called while drivers are
still using interrupts.

There is a report about this breaking ACPI power off on some systems.
http://bugme.osdl.org/show_bug.cgi?id=4041
However the final comment seems to exonerate this code.  So until
I get more information I believe that was a false positive.

Signed-off-by: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/i386/kernel/i8259.c