* [PATCH] cpudile: optimize cpuidle_enable_device error handling
@ 2017-09-01 15:07 gaurav jindal
0 siblings, 0 replies; only message in thread
From: gaurav jindal @ 2017-09-01 15:07 UTC (permalink / raw)
To: rjw, daniel.lezcano; +Cc: linux-pm, linux-kernel
do not fetch per cpu drv id cpuidle_curr_governor is NULL.
if cpuidle_enable_device is NULL return -EIO. it prevents
the addtional per cpu processing
Signed-off-by: Gaurav Jindal<gauravjindal1104@gmail.com>
---
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 1519716..6464e09 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -367,9 +367,12 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
if (dev->enabled)
return 0;
+ if (!cpuidle_curr_governor)
+ return -EIO;
+
drv = cpuidle_get_cpu_driver(dev);
- if (!drv || !cpuidle_curr_governor)
+ if (!drv)
return -EIO;
if (!dev->registered)
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2017-09-01 15:07 [PATCH] cpudile: optimize cpuidle_enable_device error handling gaurav jindal
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