Simplify ida index allocation and removal by
using the ida_simple_* helper functions.
Signed-off-by: Lee Duncan <ldun...@suse.com>
---
drivers/block/nvme-core.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index d1d6141920d3..d354a3391e4a 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -2713,18 +2713,10 @@ static DEFINE_IDA(nvme_instance_ida);
static int nvme_set_instance(struct nvme_dev *dev)
{
- int instance, error;
+ int instance;
- do {
- if (!ida_pre_get(&nvme_instance_ida, GFP_KERNEL))
- return -ENODEV;
-
- spin_lock(&dev_list_lock);
- error = ida_get_new(&nvme_instance_ida, &instance);
- spin_unlock(&dev_list_lock);
- } while (error == -EAGAIN);
-
- if (error)
+ instance = ida_simple_get(&nvme_instance_ida, 0, 0, GFP_KERNEL);
+ if (instance < 0)
return -ENODEV;
dev->instance = instance;
@@ -2734,7 +2726,7 @@ static int nvme_set_instance(struct nvme_dev *dev)
static void nvme_release_instance(struct nvme_dev *dev)
{
spin_lock(&dev_list_lock);
- ida_remove(&nvme_instance_ida, dev->instance);
+ ida_simple_remove(&nvme_instance_ida, dev->instance);
spin_unlock(&dev_list_lock);
}
--
2.1.4
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