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

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 7 insertions, 5 deletions

diff --git a/mm/memblock.c b/mm/memblock.c
index c1d2060e213e..fc7f97b2d994 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -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;
         }