[PATCH -next] dma-buf: heaps: Make sys_heap static

[Zou Wei]

Fix the following sparse warning:

drivers/dma-buf/heaps/system_heap.c:23:17: warning: symbol 'sys_heap' was not declared. Should it be static?

sys_heap has only call within system_heap.c
It should be static

Reported-by: Hulk Robot <hulkci at huawei.com>
Signed-off-by: Zou Wei <zou_wei at huawei.com>
---
 drivers/dma-buf/heaps/system_heap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma-buf/heaps/system_heap.c b/drivers/dma-buf/heaps/system_heap.c
index 0bf688e..41502bf 100644
--- a/drivers/dma-buf/heaps/system_heap.c
+++ b/drivers/dma-buf/heaps/system_heap.c
@@ -20,7 +20,7 @@
 
 #include "heap-helpers.h"
 
-struct dma_heap *sys_heap;
+static struct dma_heap *sys_heap;
 
 static void system_heap_free(struct heap_helper_buffer *buffer)
 {
-- 
2.6.2