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parisc: Avoid stalled CPU warnings after system shutdown

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commit 476e75a44b upstream.

Commit 73580dac76 ("parisc: Fix system shutdown halt") introduced an endless
loop for systems which don't provide a software power off function.  But the
soft lockup detector will detect this and report stalled CPUs after some time.
Avoid those unwanted warnings by disabling the soft lockup detector.

Fixes: 73580dac76 ("parisc: Fix system shutdown halt")
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller
2017-03-29 08:25:30 +02:00
committed by Greg Kroah-Hartman
parent 37e6234297
commit fc12a50f77
1 changed files with 2 additions and 0 deletions
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2
arch/parisc/kernel/process.c
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@@ -140,6 +140,8 @@ void machine_power_off(void)
printk(KERN_EMERG "System shut down completed.\n" printk(KERN_EMERG "System shut down completed.\n"
"Please power this system off now."); "Please power this system off now.");
/* prevent soft lockup/stalled CPU messages for endless loop. */
rcu_sysrq_start();
for (;;); for (;;);
} }