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authorDaniel Lezcano <daniel.lezcano@linaro.org>2012-03-26 14:51:26 +0200
committerLen Brown <len.brown@intel.com>2012-03-30 01:55:04 -0400
commitfc850f39ea54c760ce438a601cfea8ab80c4898e (patch)
tree3f413ea8c13cc12f7f6af16bc198a17914695f1b
parent3a53396b0381ec9d5180fd8fe7a681c8ce95fd9a (diff)
cpuidle: use the driver's state_count as default
If the state_count is not initialized for the device use the driver's state count as the default. That will prevent to add it manually in the cpuidle driver initialization routine and will save us from duplicate line of code. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/cpuidle/cpuidle.c2
-rw-r--r--drivers/cpuidle/driver.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 77304b6b8ae..f7cab5e9c4d 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -268,7 +268,7 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
if (!drv || !cpuidle_curr_governor)
return -EIO;
if (!dev->state_count)
- return -EINVAL;
+ dev->state_count = drv->state_count;
if (dev->registered == 0) {
ret = __cpuidle_register_device(dev);
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 284d7af5a9c..40cd3f3024d 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -47,7 +47,7 @@ static void __cpuidle_register_driver(struct cpuidle_driver *drv)
*/
int cpuidle_register_driver(struct cpuidle_driver *drv)
{
- if (!drv)
+ if (!drv || !drv->state_count)
return -EINVAL;
if (cpuidle_disabled())