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IB/umad: Convert *cdev to cdev in struct ib_umad_port 

Instead of storing pointers to cdev and sm_cdev, embed the full
structures instead.

This change allows us to use the container_of() macro in ib_umad_open()
and ib_umad_sm_open() in a future patch.

This change increases the size of struct ib_umad_port to 320 bytes
from 128.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Alexander Chiang 2010-02-02 19:08:25 +00:00 committed by Roland Dreier
parent 9afed76d59
commit 2b937afcab
1 changed files with 20 additions and 26 deletions
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46
drivers/infiniband/core/user_mad.c
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@ -87,10 +87,10 @@ enum {
*/
struct ib_umad_port {
struct cdev *cdev;
struct cdev cdev;
struct device *dev;
struct cdev *sm_cdev;
struct cdev sm_cdev;
struct device *sm_dev;
struct semaphore sm_sem;
@ -1008,17 +1008,14 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
mutex_init(&port->file_mutex);
INIT_LIST_HEAD(&port->file_list);
port->cdev = cdev_alloc();
if (!port->cdev)
return -1;
port->cdev->owner = THIS_MODULE;
port->cdev->ops = &umad_fops;
kobject_set_name(&port->cdev->kobj, "umad%d", port->dev_num);
if (cdev_add(port->cdev, base_dev + port->dev_num, 1))
cdev_init(&port->cdev, &umad_fops);
port->cdev.owner = THIS_MODULE;
kobject_set_name(&port->cdev.kobj, "umad%d", port->dev_num);
if (cdev_add(&port->cdev, base_dev + port->dev_num, 1))
goto err_cdev;
port->dev = device_create(umad_class, device->dma_device,
port->cdev->dev, port,
port->cdev.dev, port,
"umad%d", port->dev_num);
if (IS_ERR(port->dev))
goto err_cdev;
@ -1028,17 +1025,14 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
if (device_create_file(port->dev, &dev_attr_port))
goto err_dev;
port->sm_cdev = cdev_alloc();
if (!port->sm_cdev)
goto err_dev;
port->sm_cdev->owner = THIS_MODULE;
port->sm_cdev->ops = &umad_sm_fops;
kobject_set_name(&port->sm_cdev->kobj, "issm%d", port->dev_num);
if (cdev_add(port->sm_cdev, base_dev + port->dev_num + IB_UMAD_MAX_PORTS, 1))
cdev_init(&port->sm_cdev, &umad_sm_fops);
port->sm_cdev.owner = THIS_MODULE;
kobject_set_name(&port->sm_cdev.kobj, "issm%d", port->dev_num);
if (cdev_add(&port->sm_cdev, base_dev + port->dev_num + IB_UMAD_MAX_PORTS, 1))
goto err_sm_cdev;
port->sm_dev = device_create(umad_class, device->dma_device,
port->sm_cdev->dev, port,
port->sm_cdev.dev, port,
"issm%d", port->dev_num);
if (IS_ERR(port->sm_dev))
goto err_sm_cdev;
@ -1055,16 +1049,16 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
return 0;
err_sm_dev:
device_destroy(umad_class, port->sm_cdev->dev);
device_destroy(umad_class, port->sm_cdev.dev);
err_sm_cdev:
cdev_del(port->sm_cdev);
cdev_del(&port->sm_cdev);
err_dev:
device_destroy(umad_class, port->cdev->dev);
device_destroy(umad_class, port->cdev.dev);
err_cdev:
cdev_del(port->cdev);
cdev_del(&port->cdev);
clear_bit(port->dev_num, dev_map);
return -1;
@ -1079,11 +1073,11 @@ static void ib_umad_kill_port(struct ib_umad_port *port)
dev_set_drvdata(port->dev, NULL);
dev_set_drvdata(port->sm_dev, NULL);
device_destroy(umad_class, port->cdev->dev);
device_destroy(umad_class, port->sm_cdev->dev);
device_destroy(umad_class, port->cdev.dev);
device_destroy(umad_class, port->sm_cdev.dev);
cdev_del(port->cdev);
cdev_del(port->sm_cdev);
cdev_del(&port->cdev);
cdev_del(&port->sm_cdev);
spin_lock(&port_lock);
umad_port[port->dev_num] = NULL;