Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 45/72] parisc: Avoid stalled CPU warnings after system shutdown | Date | Thu, 6 Apr 2017 10:38:32 +0200 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Helge Deller <deller@gmx.de>
commit 476e75a44b56038bee9207242d4bc718f6b4de06 upstream.
Commit 73580dac7618 ("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: 73580dac7618 ("parisc: Fix system shutdown halt") Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/parisc/kernel/process.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -140,6 +140,8 @@ void machine_power_off(void) printk(KERN_EMERG "System shut down completed.\n" "Please power this system off now."); + /* prevent soft lockup/stalled CPU messages for endless loop. */ + rcu_sysrq_start(); for (;;); }
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