Convert to the much saner new idr interface.

Only compile tested.

Signed-off-by: Tejun Heo <t...@kernel.org>
Cc: Stefan Richter <stef...@s5r6.in-berlin.de>
Cc: linux1394-de...@lists.sourceforge.net
---
This patch depends on an earlier idr changes and I think it would be
best to route these together through -mm.  Please holler if there's
any objection.  Thanks.

 drivers/firewire/core-cdev.c   | 16 +++++++---------
 drivers/firewire/core-device.c |  5 ++---
 2 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 68c3138..46a1f88 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -490,24 +490,22 @@ static int add_client_resource(struct client *client,
        unsigned long flags;
        int ret;
 
- retry:
-       if (idr_pre_get(&client->resource_idr, gfp_mask) == 0)
-               return -ENOMEM;
-
+       idr_preload(gfp_mask);
        spin_lock_irqsave(&client->lock, flags);
+
        if (client->in_shutdown)
                ret = -ECANCELED;
        else
-               ret = idr_get_new(&client->resource_idr, resource,
-                                 &resource->handle);
+               ret = idr_alloc(&client->resource_idr, resource, 0, 0,
+                               GFP_NOWAIT);
        if (ret >= 0) {
+               resource->handle = ret;
                client_get(client);
                schedule_if_iso_resource(resource);
        }
-       spin_unlock_irqrestore(&client->lock, flags);
 
-       if (ret == -EAGAIN)
-               goto retry;
+       spin_unlock_irqrestore(&client->lock, flags);
+       idr_preload_end();
 
        return ret < 0 ? ret : 0;
 }
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index 3873d53..c137de6 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -1017,13 +1017,12 @@ static void fw_device_init(struct work_struct *work)
 
        fw_device_get(device);
        down_write(&fw_device_rwsem);
-       ret = idr_pre_get(&fw_device_idr, GFP_KERNEL) ?
-             idr_get_new(&fw_device_idr, device, &minor) :
-             -ENOMEM;
+       ret = idr_alloc(&fw_device_idr, device, 0, 0, GFP_KERNEL);
        up_write(&fw_device_rwsem);
 
        if (ret < 0)
                goto error;
+       minor = ret;
 
        device->device.bus = &fw_bus_type;
        device->device.type = &fw_device_type;
-- 
1.8.1

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