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authorSuzuki K. Poulose <suzuki.poulose@arm.com>2015-11-20 20:45:40 +0300
committerCatalin Marinas <catalin.marinas@arm.com>2015-11-25 15:14:25 +0300
commit7142392dcac240b37cce8a246225bb11213246cc (patch)
treecfe5f8ae15b57016f2fd204ea39830c669b56eb1 /arch/arm64
parent1ec218373b8ebda821aec00bb156a9c94fad9cd4 (diff)
downloadlinux-7142392dcac240b37cce8a246225bb11213246cc.tar.xz
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>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/mm/mmu.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index abb66f84d4ac..78d91b1eab84 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -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;
}