diff options
| -rw-r--r-- | include/linux/memblock.h | 2 | ||||
| -rw-r--r-- | mm/memblock.c | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 1a9c29cc92fa..dfa64494ced1 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -19,7 +19,7 @@ #include <asm/memblock.h> #define INIT_MEMBLOCK_REGIONS 128 -#define MEMBLOCK_ERROR (~(phys_addr_t)0) +#define MEMBLOCK_ERROR 0 struct memblock_region { phys_addr_t base; diff --git a/mm/memblock.c b/mm/memblock.c index 85cfa1d3ab28..cb520df2a414 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -105,6 +105,12 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en phys_addr_t base, res_base; long j; + /* Prevent allocations returning 0 as it's also used to + * indicate an allocation failure + */ + if (start == 0) + start = PAGE_SIZE; + base = memblock_align_down((end - size), align); while (start <= base) { j = memblock_overlaps_region(&memblock.reserved, base, size); |