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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-02-26 14:41:00 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-02-26 14:41:00 +1100
commit874f2f997dbe041a6c6e509dae8656ed9022d65d (patch)
tree61898165882041ef7f9beaf2ef6663a1a4d3c29a /lib
parent071c06cb570d38efe23a124e885f2f3e643a9206 (diff)
parent6ebdc661b608671e9ca572af8bb42d58108cc008 (diff)
Merge commit 'origin/master' into next
Manual merge of: drivers/char/hvc_console.c drivers/char/hvc_console.h
Diffstat (limited to 'lib')
-rw-r--r--lib/idr.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/idr.c b/lib/idr.c
index 1cac726c44bc..0dc782216d4b 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -156,10 +156,12 @@ static int sub_alloc(struct idr *idp, int *starting_id, struct idr_layer **pa)
id = (id | ((1 << (IDR_BITS * l)) - 1)) + 1;
/* if already at the top layer, we need to grow */
- if (!(p = pa[l])) {
+ if (id >= 1 << (idp->layers * IDR_BITS)) {
*starting_id = id;
return IDR_NEED_TO_GROW;
}
+ p = pa[l];
+ BUG_ON(!p);
/* If we need to go up one layer, continue the
* loop; otherwise, restart from the top.