[PATCH] prio_tree.c: quiet sparse noise

[H Hartley Sweeten <hartleys@visionengravers.com>]

prio_tree.c: quiet sparse noise

The function prio_tree_init is called during start_kernel. Since it
is an __init function it is not exposed as an exported symbol.
A sparse build produces the following warning because of this:

warning: symbol 'prio_tree_init' was not declared. Should it be static?

Quiet the warning by declaring the function as an extern before
it's definition.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>

---

diff --git a/lib/prio_tree.c b/lib/prio_tree.c
index ccfd850..a677200 100644
--- a/lib/prio_tree.c
+++ b/lib/prio_tree.c
@@ -68,6 +68,9 @@ static void get_index(const struct prio_tree_root *root,
 
 static unsigned long index_bits_to_maxindex[BITS_PER_LONG];
 
+/* Keep sparse happy since this is not an EXPORT_SYMBOL */
+extern void prio_tree_init(void);
+
 void __init prio_tree_init(void)
 {
 	unsigned int i;