If the machine is booted without any cpu_idle driver set
(b/c disable_cpuidle() has been called) we should follow
other users of cpu_idle API and check the return value
for NULL before using it.
Reported-by: Mark van Dijk <m...@internecto.net>
Tested-by: Mark van Dijk <m...@internecto.net>
Suggested-by: Jan Beulich <jbeul...@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
---
drivers/idle/intel_idle.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index f559088..7383aa0 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -607,7 +607,7 @@ static int __init intel_idle_init(void)
retval = cpuidle_register_driver(&intel_idle_driver);
if (retval) {
printk(KERN_DEBUG PREFIX "intel_idle yielding to %s",
- cpuidle_get_driver()->name);
+ cpuidle_get_driver() ? cpuidle_get_driver()->name :
"none");
return retval;
}
--
1.7.7.6
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