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-rw-r--r--drivers/of/fdt.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index c4cddf0cd96d..b777d8f46bd5 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -880,6 +880,21 @@ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
880 const u64 phys_offset = __pa(PAGE_OFFSET); 880 const u64 phys_offset = __pa(PAGE_OFFSET);
881 base &= PAGE_MASK; 881 base &= PAGE_MASK;
882 size &= PAGE_MASK; 882 size &= PAGE_MASK;
883
884 if (sizeof(phys_addr_t) < sizeof(u64)) {
885 if (base > ULONG_MAX) {
886 pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
887 base, base + size);
888 return;
889 }
890
891 if (base + size > ULONG_MAX) {
892 pr_warning("Ignoring memory range 0x%lx - 0x%llx\n",
893 ULONG_MAX, base + size);
894 size = ULONG_MAX - base;
895 }
896 }
897
883 if (base + size < phys_offset) { 898 if (base + size < phys_offset) {
884 pr_warning("Ignoring memory block 0x%llx - 0x%llx\n", 899 pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
885 base, base + size); 900 base, base + size);