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base: soc: siplify ida usage 

Simplify ida index allocation and removal by
using the ida_simple_* helper functions

Signed-off-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lee Duncan 2015-10-01 11:59:09 -07:00 committed by Greg Kroah-Hartman
parent fa40ae3444
commit cfcf6a91aa
1 changed files with 5 additions and 16 deletions
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21
drivers/base/soc.c
View File

@ -16,7 +16,6 @@
#include <linux/err.h>
static DEFINE_IDA(soc_ida);
static DEFINE_SPINLOCK(soc_lock);
static ssize_t soc_info_get(struct device *dev,
struct device_attribute *attr,
@ -122,20 +121,10 @@ struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr
}
/* Fetch a unique (reclaimable) SOC ID. */
do {
if (!ida_pre_get(&soc_ida, GFP_KERNEL)) {
ret = -ENOMEM;
goto out2;
}
spin_lock(&soc_lock);
ret = ida_get_new(&soc_ida, &soc_dev->soc_dev_num);
spin_unlock(&soc_lock);
} while (ret == -EAGAIN);
if (ret)
ret = ida_simple_get(&soc_ida, 0, 0, GFP_KERNEL);
if (ret < 0)
goto out2;
soc_dev->soc_dev_num = ret;
soc_dev->attr = soc_dev_attr;
soc_dev->dev.bus = &soc_bus_type;
@ -151,7 +140,7 @@ struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr
return soc_dev;
out3:
ida_remove(&soc_ida, soc_dev->soc_dev_num);
ida_simple_remove(&soc_ida, soc_dev->soc_dev_num);
out2:
kfree(soc_dev);
out1:
@ -161,7 +150,7 @@ struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr
/* Ensure soc_dev->attr is freed prior to calling soc_device_unregister. */
void soc_device_unregister(struct soc_device *soc_dev)
{
ida_remove(&soc_ida, soc_dev->soc_dev_num);
ida_simple_remove(&soc_ida, soc_dev->soc_dev_num);
device_unregister(&soc_dev->dev);
}