drivers: cma: represent physical addresses as phys_addr_t
This commit changes the CMA early initialization code to use phys_addr_t
for representing physical addresses instead of unsigned long.
Without this change, among other things, dma_declare_contiguous() simply
discards any memory regions whose address is not representable as unsigned
long.
This is a problem on 32-bit PAE machines where unsigned long is 32-bit
but physical address space is larger.
Change-Id: I0651ae4bfdbd86139398433f4a3f632efd482b8a
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 2f303e4..01b5c84 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -68,7 +68,7 @@
extern struct cma *dma_contiguous_default_area;
void dma_contiguous_reserve(phys_addr_t addr_limit);
-int dma_declare_contiguous(struct device *dev, unsigned long size,
+int dma_declare_contiguous(struct device *dev, phys_addr_t size,
phys_addr_t base, phys_addr_t limit);
struct page *dma_alloc_from_contiguous(struct device *dev, int count,
@@ -83,7 +83,7 @@
static inline void dma_contiguous_reserve(phys_addr_t limit) { }
static inline
-int dma_declare_contiguous(struct device *dev, unsigned long size,
+int dma_declare_contiguous(struct device *dev, phys_addr_t size,
phys_addr_t base, phys_addr_t limit)
{
return -ENOSYS;