[PATCH 27/32] ocrdma: Convert ocrdma_dev_id to IDA

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This driver doesn't look up the pointer that it stores, so this can
just be an IDA and save some memory.

Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
---
 drivers/infiniband/hw/ocrdma/ocrdma_main.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 1f393842453a..b014eeffbcce 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -62,7 +62,7 @@ MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
 MODULE_AUTHOR("Emulex Corporation");
 MODULE_LICENSE("Dual BSD/GPL");
 
-static DEFINE_IDR(ocrdma_dev_id);
+static DEFINE_IDA(ocrdma_dev_id);
 
 void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid)
 {
@@ -302,12 +302,12 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
 	}
 	dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
 	if (!dev->mbx_cmd)
-		goto idr_err;
+		goto ida_err;
 
 	memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
-	dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL);
+	dev->id = ida_alloc(&ocrdma_dev_id, GFP_KERNEL);
 	if (dev->id < 0)
-		goto idr_err;
+		goto ida_err;
 
 	status = ocrdma_init_hw(dev);
 	if (status)
@@ -345,8 +345,8 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
 	ocrdma_free_resources(dev);
 	ocrdma_cleanup_hw(dev);
 init_err:
-	idr_remove(&ocrdma_dev_id, dev->id);
-idr_err:
+	ida_free(&ocrdma_dev_id, dev->id);
+ida_err:
 	kfree(dev->mbx_cmd);
 	ib_dealloc_device(&dev->ibdev);
 	pr_err("%s() leaving. ret=%d\n", __func__, status);
@@ -355,8 +355,7 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
 
 static void ocrdma_remove_free(struct ocrdma_dev *dev)
 {
-
-	idr_remove(&ocrdma_dev_id, dev->id);
+	ida_free(&ocrdma_dev_id, dev->id);
 	kfree(dev->mbx_cmd);
 	ib_dealloc_device(&dev->ibdev);
 }
@@ -461,7 +460,6 @@ static void __exit ocrdma_exit_module(void)
 {
 	be_roce_unregister_driver(&ocrdma_drv);
 	ocrdma_rem_debugfs();
-	idr_destroy(&ocrdma_dev_id);
 }
 
 module_init(ocrdma_init_module);
-- 
2.20.1




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