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authorCorey Minyard <minyard@acm.org>2005-09-06 15:18:39 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-07 16:57:48 -0700
commit8f05ee9a63b414da4fd036a9dab2d27727301188 (patch)
tree97309901620848a9bc045dd88df6cc7eb2582ab0 /drivers/char
parent75b0768a396f2a25901b7b1edc87b95cdb3af4ef (diff)
[PATCH] ipmi: watchdog/NMI interaction fixes
There are some interactions between IPMI NMI timeouts and the other operations of the IPMI driver. This make sure those interactions are handled properly. Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/ipmi/ipmi_watchdog.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index d35a953961c..82d56434208 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -259,7 +259,7 @@ static int i_ipmi_set_timeout(struct ipmi_smi_msg *smi_msg,
data[1] = 0;
WDOG_SET_TIMEOUT_ACT(data[1], ipmi_watchdog_state);
- if (pretimeout > 0) {
+ if ((pretimeout > 0) && (ipmi_watchdog_state != WDOG_TIMEOUT_NONE)) {
WDOG_SET_PRETIMEOUT_ACT(data[1], preaction_val);
data[2] = pretimeout;
} else {
@@ -817,15 +817,19 @@ static void ipmi_register_watchdog(int ipmi_intf)
static int
ipmi_nmi(void *dev_id, struct pt_regs *regs, int cpu, int handled)
{
+ /* If we are not expecting a timeout, ignore it. */
+ if (ipmi_watchdog_state == WDOG_TIMEOUT_NONE)
+ return NOTIFY_DONE;
+
/* If no one else handled the NMI, we assume it was the IPMI
watchdog. */
- if ((!handled) && (preop_val == WDOG_PREOP_PANIC))
+ if ((!handled) && (preop_val == WDOG_PREOP_PANIC)) {
+ /* On some machines, the heartbeat will give
+ an error and not work unless we re-enable
+ the timer. So do so. */
+ pretimeout_since_last_heartbeat = 1;
panic(PFX "pre-timeout");
-
- /* On some machines, the heartbeat will give
- an error and not work unless we re-enable
- the timer. So do so. */
- pretimeout_since_last_heartbeat = 1;
+ }
return NOTIFY_DONE;
}