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memblock: Define MEMBLOCK_ERROR internally instead of using ~(phys_addr_t)0

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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2010-07-06 15:39:09 -07:00
parent 3a9c2c81eb
commit 4d629f9a02
1 changed files with 7 additions and 5 deletions
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12
mm/memblock.c
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@ -22,6 +22,8 @@ static int memblock_debug;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
#define MEMBLOCK_ERROR (~(phys_addr_t)0)
static int __init early_memblock(char *p)
{
if (p && strstr(p, "debug"))
@ -326,7 +328,7 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
base = memblock_align_down(res_base - size, align);
}
return ~(phys_addr_t)0;
return MEMBLOCK_ERROR;
}
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
@ -353,14 +355,14 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
phys_addr_t ret = memblock_find_region(start, this_end, size, align);
if (ret != ~(phys_addr_t)0 &&
if (ret != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, ret, size) >= 0)
return ret;
}
start = this_end;
}
return ~(phys_addr_t)0;
return MEMBLOCK_ERROR;
}
phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
@ -379,7 +381,7 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
for (i = 0; i < mem->cnt; i++) {
phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
if (ret != ~(phys_addr_t)0)
if (ret != MEMBLOCK_ERROR)
return ret;
}
@ -430,7 +432,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_find_region(memblockbase, base, size, align);
if (res_base != ~(phys_addr_t)0 &&
if (res_base != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, res_base, size) >= 0)
return res_base;
}