diff options
| author | Michael Neuling <mikey@neuling.org> | 2011-07-04 20:40:10 +0000 |
|---|---|---|
| committer | Jonas ABERG <jonas.aberg@stericsson.com> | 2011-10-28 11:11:29 +0200 |
| commit | ba9bb67c61b87ad72071d1ae4687325a66da1df7 (patch) | |
| tree | 0dbac440a15c2bd0cdea43f3cb82e84eed2c994a | |
| parent | a70463e21cc2a9ee284c51a438fd2307db7a2e1c (diff) | |
powerpc/kdump: Fix timeout in crash_kexec_wait_realmode
commit 63f21a56f1cc0b800a4c00349c59448f82473d19 upstream.
The existing code it pretty ugly. How about we clean it up even more
like this?
From: Anton Blanchard <anton@samba.org>
We check for timeout expiry in the outer loop, but we also need to
check it in the inner loop or we can lock up forever waiting for a
CPU to hit real mode.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Change-Id: I8a147a77e62da92c342464e479db973f31797d78
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35636
Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
| -rw-r--r-- | arch/powerpc/kernel/crash.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c index 4e6ee944495..cc6a9d5d69a 100644 --- a/arch/powerpc/kernel/crash.c +++ b/arch/powerpc/kernel/crash.c @@ -242,12 +242,8 @@ static void crash_kexec_wait_realmode(int cpu) while (paca[i].kexec_state < KEXEC_STATE_REAL_MODE) { barrier(); - if (!cpu_possible(i)) { + if (!cpu_possible(i) || !cpu_online(i) || (msecs <= 0)) break; - } - if (!cpu_online(i)) { - break; - } msecs--; mdelay(1); } |