CMA: fix CONFIG_CMA_SIZE_MBYTES overflow in 64bit

[firefly-linux-kernel-4.4.55.git] / drivers / base / dma-contiguous.c

diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index 950fff9ce45397024ac5751b452cdd96a6da9907..426ba2772fe62af466e8a9fd94c83a6c7bb91648 100644 (file)
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -46,7 +46,7 @@ struct cma *dma_contiguous_default_area;
  * Users, who want to set the size of global CMA area for their system
  * should use cma= kernel parameter.
  */
-static const phys_addr_t size_bytes = CMA_SIZE_MBYTES * SZ_1M;
+static const phys_addr_t size_bytes = (phys_addr_t)CMA_SIZE_MBYTES * SZ_1M;
 static phys_addr_t size_cmdline = -1;
 static phys_addr_t base_cmdline;
 static phys_addr_t limit_cmdline;