[PATCH 4/7 V3] idr: fix idr_replace()'s returned error code

[Lai Jiangshan]

When the smaller id is not found, idr_replace() returns -ENOENT.
But when the id is bigger enough, idr_replace() returns -EINVAL,
actually there is no difference between these two kinds of ids.

These are all unallocated id, the return values of the idr_replace()
for these ids should be the same: -ENOENT.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
---
 lib/idr.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/idr.c b/lib/idr.c
index 36ff732..e79e051 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -814,10 +814,10 @@ void *idr_replace(struct idr *idp, void *ptr, int id)
 
 	p = idp->top;
 	if (!p)
-		return ERR_PTR(-EINVAL);
+		return ERR_PTR(-ENOENT);
 
 	if (id > idr_max(p->layer + 1))
-		return ERR_PTR(-EINVAL);
+		return ERR_PTR(-ENOENT);
 
 	n = p->layer * IDR_BITS;
 	while ((n > 0) && p) {
-- 
1.7.4.4

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