swiotlb: Mark max_segment with static keyword

Sparse is not happy about max_segment declaration:

  CHECK   kernel/dma/swiotlb.c
  kernel/dma/swiotlb.c:96:14: warning: symbol 'max_segment' was not declared. Should it be static?

Mark it static as suggested.

Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 6499bda8f0b809c967e9f895ddd2877994f724d4..465a567678d9663d28790b08222485cea9d4f10b 100644 (file)
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -93,7 +93,7 @@ static unsigned int io_tlb_index;
  * Max segment that we can provide which (if pages are contingous) will
  * not be bounced (unless SWIOTLB_FORCE is set).
  */
-unsigned int max_segment;
+static unsigned int max_segment;
 
 /*
  * We need to save away the original address corresponding to a mapped entry