[PATCH v7 2/6] fdtdec: Fix boundary check
Atish Patra
atish.patra at wdc.com
Tue Apr 21 20:15:00 CEST 2020
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 at wdc.com>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---
lib/fdtdec.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 9ecfa2a2d743..460f0d250b4d 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -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;
--
2.25.1
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