IB/cxgb4: convert to idr_alloc()
Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 4c07fc0..7eec5e1 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -260,20 +260,21 @@
void *handle, u32 id, int lock)
{
int ret;
- int newid;
- do {
- if (!idr_pre_get(idr, lock ? GFP_KERNEL : GFP_ATOMIC))
- return -ENOMEM;
- if (lock)
- spin_lock_irq(&rhp->lock);
- ret = idr_get_new_above(idr, handle, id, &newid);
- BUG_ON(!ret && newid != id);
- if (lock)
- spin_unlock_irq(&rhp->lock);
- } while (ret == -EAGAIN);
+ if (lock) {
+ idr_preload(GFP_KERNEL);
+ spin_lock_irq(&rhp->lock);
+ }
- return ret;
+ ret = idr_alloc(idr, handle, id, id + 1, GFP_ATOMIC);
+
+ if (lock) {
+ spin_unlock_irq(&rhp->lock);
+ idr_preload_end();
+ }
+
+ BUG_ON(ret == -ENOSPC);
+ return ret < 0 ? ret : 0;
}
static inline int insert_handle(struct c4iw_dev *rhp, struct idr *idr,