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Subject[PATCH 03/10] watchdog/hpwdt: Update nmi_panic message.
Date
Include the nmistat in the nmi_panic message to give support
an indication why the NMI was called (e.g. a timeout or generate
nmi button.)

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
---
drivers/watchdog/hpwdt.c | 27 +++++++++++++++++++--------
1 file changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 260740051084..7f55b9bf371e 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -106,24 +106,35 @@ static int hpwdt_my_nmi(void)
return ioread8(hpwdt_nmistat) & 0x6;
}

+static inline int hexdigit(int v)
+{
+ return (v > 9) ? (v-9+'A') : (v+'0');
+}
+
/*
* NMI Handler
*/
static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
{
- if ((ulReason == NMI_UNKNOWN) && !hpwdt_my_nmi())
+ unsigned int mynmi = hpwdt_my_nmi();
+ static char panic_msg[] =
+ "00: An NMI occurred. Depending on your system the reason "
+ "for the NMI is logged in any one of the following resources:\n"
+ "1. Integrated Management Log (IML)\n"
+ "2. OA Syslog\n"
+ "3. OA Forward Progress Log\n"
+ "4. iLO Event Log";
+
+ if ((ulReason == NMI_UNKNOWN) && !mynmi)
return NMI_DONE;

if (allow_kdump)
hpwdt_stop();

- nmi_panic(regs, "An NMI occurred. Depending on your system the reason "
- "for the NMI is logged in any one of the following "
- "resources:\n"
- "1. Integrated Management Log (IML)\n"
- "2. OA Syslog\n"
- "3. OA Forward Progress Log\n"
- "4. iLO Event Log");
+ panic_msg[0] = hexdigit((mynmi>>4)&0xf);
+ panic_msg[1] = hexdigit(mynmi&0xf);
+
+ nmi_panic(regs, panic_msg);

return NMI_HANDLED;
}
--
2.13.6
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