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authorDon Zickus <dzickus@redhat.com>2011-01-06 16:18:48 -0500
committerIngo Molnar <mingo@elte.hu>2011-01-07 15:08:52 +0100
commit673a6092ce5f5bec45619b7a7f89cfcf8bcf3c41 (patch)
treedb1ea99585f3744097e10b15f581ceb55e812eab /drivers/watchdog/hpwdt.c
parent1c7b74d46fed530cca22a9a54140cdac2815c797 (diff)
x86: Convert some devices to use DIE_NMIUNKNOWN
They are a handful of places in the code that register a die_notifier as a catch all in case no claims the NMI. Unfortunately, they trigger on events like DIE_NMI and DIE_NMI_IPI, which depending on when they registered may collide with other handlers that have the ability to determine if the NMI is theirs or not. The function unknown_nmi_error() makes one last effort to walk the die_chain when no one else has claimed the NMI before spitting out messages that the NMI is unknown. This is a better spot for these devices to execute any code without colliding with the other handlers. The two drivers modified are only compiled on x86 arches I believe, so they shouldn't be affected by other arches that may not have DIE_NMIUNKNOWN defined. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: Russ Anderson <rja@sgi.com> Cc: Corey Minyard <minyard@acm.org> Cc: openipmi-developer@lists.sourceforge.net Cc: dann frazier <dannf@hp.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1294348732-15030-3-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/watchdog/hpwdt.c')
-rw-r--r--drivers/watchdog/hpwdt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index dea7b5bf6e2..24b966d5061 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -469,7 +469,7 @@ static int hpwdt_pretimeout(struct notifier_block *nb, unsigned long ulReason,
unsigned long rom_pl;
static int die_nmi_called;
- if (ulReason != DIE_NMI && ulReason != DIE_NMI_IPI)
+ if (ulReason != DIE_NMIUNKNOWN)
goto out;
if (!hpwdt_nmi_decoding)