firewire: convert to idr_alloc()
Convert to the much saner new idr interface.
v2: Stefan pointed out that add_client_resource() may be called from
non-process context. Preload iff @gfp_mask contains __GFP_WAIT.
Also updated to include minor upper limit check.
[[email protected]: fix accidentally orphaned 'minor'[
Signed-off-by: Tejun Heo <[email protected]>
Acked-by: Stefan Richter <[email protected]>
Signed-off-by: Tim Gardner <[email protected]>
Signed-off-by: Stefan Richter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 68c3138..27ac423 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -487,27 +487,28 @@
static int add_client_resource(struct client *client,
struct client_resource *resource, gfp_t gfp_mask)
{
+ bool preload = gfp_mask & __GFP_WAIT;
unsigned long flags;
int ret;
- retry:
- if (idr_pre_get(&client->resource_idr, gfp_mask) == 0)
- return -ENOMEM;
-
+ if (preload)
+ 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);
+ if (preload)
+ idr_preload_end();
return ret < 0 ? ret : 0;
}
