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watchdog: hpwdt: prevent multiple "NMI occurred" messages 

On platforms with no iCRU support don't print two, (possibly conflicting),
"NMI occurred" messages when the firmware is unable to source the NMI.

Please note that one of the enhancements to the v1.3.0 hpwdt driver is to panic and allow
KDUMP to succeed even on NMIs that are unknown to the platform firmware.

Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Reviewed-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Naga Chumbalkar 2011-08-09 22:27:26 +00:00 committed by Wim Van Sebroeck
parent cb7efc02c6
commit dbc018eca3
1 changed files with 7 additions and 6 deletions
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13
drivers/watchdog/hpwdt.c
View File

@ -494,15 +494,16 @@ static int hpwdt_pretimeout(struct notifier_block *nb, unsigned long ulReason,
asminline_call(&cmn_regs, cru_rom_addr);
die_nmi_called = 1;
spin_unlock_irqrestore(&rom_lock, rom_pl);
if (!is_icru) {
if (cmn_regs.u1.ral == 0) {
printk(KERN_WARNING "hpwdt: An NMI occurred, "
"but unable to determine source.\n");
}
}
if (allow_kdump)
hpwdt_stop();
if (!is_icru) {
if (cmn_regs.u1.ral == 0) {
panic("An NMI occurred, "
"but unable to determine source.\n");
}
}
panic("An NMI occurred, please see the Integrated "
"Management Log for details.\n");