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authorCorey Minyard <minyard@acm.org>2005-09-06 18:18:39 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-07 19:57:48 -0400
commit8f05ee9a63b414da4fd036a9dab2d27727301188 (patch)
tree97309901620848a9bc045dd88df6cc7eb2582ab0 /drivers/char/ipmi
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/ipmi')
-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 d35a953961cb..82d564342084 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,
259 259
260 data[1] = 0; 260 data[1] = 0;
261 WDOG_SET_TIMEOUT_ACT(data[1], ipmi_watchdog_state); 261 WDOG_SET_TIMEOUT_ACT(data[1], ipmi_watchdog_state);
262 if (pretimeout > 0) { 262 if ((pretimeout > 0) && (ipmi_watchdog_state != WDOG_TIMEOUT_NONE)) {
263 WDOG_SET_PRETIMEOUT_ACT(data[1], preaction_val); 263 WDOG_SET_PRETIMEOUT_ACT(data[1], preaction_val);
264 data[2] = pretimeout; 264 data[2] = pretimeout;
265 } else { 265 } else {
@@ -817,15 +817,19 @@ static void ipmi_register_watchdog(int ipmi_intf)
817static int 817static int
818ipmi_nmi(void *dev_id, struct pt_regs *regs, int cpu, int handled) 818ipmi_nmi(void *dev_id, struct pt_regs *regs, int cpu, int handled)
819{ 819{
820 /* If we are not expecting a timeout, ignore it. */
821 if (ipmi_watchdog_state == WDOG_TIMEOUT_NONE)
822 return NOTIFY_DONE;
823
820 /* If no one else handled the NMI, we assume it was the IPMI 824 /* If no one else handled the NMI, we assume it was the IPMI
821 watchdog. */ 825 watchdog. */
822 if ((!handled) && (preop_val == WDOG_PREOP_PANIC)) 826 if ((!handled) && (preop_val == WDOG_PREOP_PANIC)) {
827 /* On some machines, the heartbeat will give
828 an error and not work unless we re-enable
829 the timer. So do so. */
830 pretimeout_since_last_heartbeat = 1;
823 panic(PFX "pre-timeout"); 831 panic(PFX "pre-timeout");
824 832 }
825 /* On some machines, the heartbeat will give
826 an error and not work unless we re-enable
827 the timer. So do so. */
828 pretimeout_since_last_heartbeat = 1;
829 833
830 return NOTIFY_DONE; 834 return NOTIFY_DONE;
831} 835}