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authorYong Zhang <yong.zhang@windriver.com>2012-07-19 09:13:53 +0200
committerRalf Baechle <ralf@linux-mips.org>2012-07-19 11:23:44 +0200
commitb789ad63ac46b00f0862bdc23fc95556adc3cf2f (patch)
tree2d096cf5770cc78f46584266bf4fbca92f339690 /arch
parentb9a09a0660aa9174e489ac531244680971950ef8 (diff)
MIPS: smp: Warn on too early irq enable
Just to catch a potential issue. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Cc: Sergei Shtylyov <sshtylyov@mvista.com> Cc: David Daney <david.daney@cavium.com> Acked-by: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/3852/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/kernel/smp.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index eb3e2b112a0d..1268392f1d27 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -130,6 +130,11 @@ asmlinkage __cpuinit void start_secondary(void)
synchronise_count_slave();
+ /*
+ * irq will be enabled in ->smp_finish(), enabling it too early
+ * is dangerous.
+ */
+ WARN_ON_ONCE(!irqs_disabled());
mp_ops->smp_finish();
cpu_idle();