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fdtdec: Fix boundary check

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In U-Boot, the reserved memory end address is considered as a inclusive
address. This notion is followed while adding a reserved memory node to
the DT.

For example:
end_address = start_address + size - 1

Follow the same notion and fix the end address computation while checking
for existing nodes.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Atish Patra 2020-04-21 11:15:00 -07:00 committed by Andes
parent 5370478d1c
commit f614753c4b
1 changed files with 2 additions and 1 deletions
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3
lib/fdtdec.c
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@ -1311,7 +1311,8 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename,
continue;
}
if (addr == carveout->start && (addr + size) == carveout->end) {
if (addr == carveout->start && (addr + size - 1) ==
carveout->end) {
if (phandlep)
*phandlep = fdt_get_phandle(blob, node);
return 0;