hpwdt: use nmi_panic() when kernel panics in NMI handler
authorHidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Tue, 22 Mar 2016 21:27:24 +0000 (14:27 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 22 Mar 2016 22:36:02 +0000 (15:36 -0700)
commitabc514c58059ca6f02df41798e828ffd864f1d21
treeb19d5a3cead82b2a6d4af1f2fff63041f7f2960e
parent73cbf4a1ddfab247f9018550637c28a7d8dd9108
hpwdt: use nmi_panic() when kernel panics in NMI handler

Commit 1717f2096b54 ("panic, x86: Fix re-entrance problem due to panic
on NMI") introduced nmi_panic() which prevents concurrent and recursive
execution of panic().  It also saves registers for the crash dump on x86
by later commit 58c5661f2144 ("panic, x86: Allow CPUs to save registers
even if looping in NMI context").

hpwdt driver can call panic() from NMI handler, so replace it with
nmi_panic().  Also, do some cleanups.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Cc: Thomas Mingarelli <thomas.mingarelli@hpe.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/watchdog/hpwdt.c