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arm64: early_alloc: Fix check for allocation failure 

In early_alloc we check if the memblock_alloc failed by checking
the virtual address of the result, which will never fail. This patch
fixes it to check the actual result for failure.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Suzuki K. Poulose 2015-11-20 17:45:40 +00:00 committed by Catalin Marinas
parent 1ec218373b
commit 7142392dca
1 changed files with 6 additions and 2 deletions
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8
arch/arm64/mm/mmu.c
View File

@ -64,8 +64,12 @@ EXPORT_SYMBOL(phys_mem_access_prot);
static void __init *early_alloc(unsigned long sz)
{
void *ptr = __va(memblock_alloc(sz, sz));
BUG_ON(!ptr);
phys_addr_t phys;
void *ptr;
phys = memblock_alloc(sz, sz);
BUG_ON(!phys);
ptr = __va(phys);
memset(ptr, 0, sz);
return ptr;
}