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RDMA/umad: Use kernel API to allocate umad indexes

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Replace custom code to allocate indexes to generic kernel API.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Leon Romanovsky 2018-10-02 11:13:30 +03:00 committed by Doug Ledford
parent 90f6e41cc0
commit 551d315e34
1 changed files with 5 additions and 6 deletions
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11
drivers/infiniband/core/user_mad.c
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@ -138,7 +138,7 @@ static const dev_t base_issm_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE) +
static dev_t dynamic_umad_dev;
static dev_t dynamic_issm_dev;
static DECLARE_BITMAP(dev_map, IB_UMAD_MAX_PORTS);
static DEFINE_IDA(umad_ida);
static void ib_umad_add_one(struct ib_device *device);
static void ib_umad_remove_one(struct ib_device *device, void *client_data);
@ -1159,11 +1159,10 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
dev_t base_umad;
dev_t base_issm;
devnum = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS);
if (devnum >= IB_UMAD_MAX_PORTS)
devnum = ida_alloc_max(&umad_ida, IB_UMAD_MAX_PORTS - 1, GFP_KERNEL);
if (devnum < 0)
return -1;
port->dev_num = devnum;
set_bit(devnum, dev_map);
if (devnum >= IB_UMAD_NUM_FIXED_MINOR) {
base_umad = dynamic_umad_dev + devnum - IB_UMAD_NUM_FIXED_MINOR;
base_issm = dynamic_issm_dev + devnum - IB_UMAD_NUM_FIXED_MINOR;
@ -1227,7 +1226,7 @@ err_dev:
err_cdev:
cdev_del(&port->cdev);
clear_bit(devnum, dev_map);
ida_free(&umad_ida, devnum);
return -1;
}
@ -1261,7 +1260,7 @@ static void ib_umad_kill_port(struct ib_umad_port *port)
}
mutex_unlock(&port->file_mutex);
clear_bit(port->dev_num, dev_map);
ida_free(&umad_ida, port->dev_num);
}
static void ib_umad_add_one(struct ib_device *device)