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ARM: mm: fix type of the arm_dma_limit global variable

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arm_dma_limit stores physical address of maximal address accessible by DMA,
so the phys_addr_t type makes much more sense for it instead of u32. This
patch fixes the following build warning:

arch/arm/mm/init.c:380: warning: comparison of distinct pointer types lacks a cast

Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This commit is contained in:
Marek Szyprowski 2012-06-06 12:05:01 +02:00
parent e53f517ff2
commit 4986e5c7cd
2 changed files with 2 additions and 2 deletions
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2
arch/arm/mm/init.c
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@ -212,7 +212,7 @@ EXPORT_SYMBOL(arm_dma_zone_size);
* allocations. This must be the smallest DMA mask in the system,
* so a successful GFP_DMA allocation will always satisfy this.
*/
u32 arm_dma_limit;
phys_addr_t arm_dma_limit;
static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole,
unsigned long dma_size)

2
arch/arm/mm/mm.h
View File

@ -62,7 +62,7 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
#endif
#ifdef CONFIG_ZONE_DMA
extern u32 arm_dma_limit;
extern phys_addr_t arm_dma_limit;
#else
#define arm_dma_limit ((u32)~0)
#endif