From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
of_parse_phandle_with_args_map() defines array @dummy_mask and @dummy_pass
these two arrays only need @MAX_PHANDLE_ARGS elements separately, but they
actually have (@MAX_PHANDLE_ARGS + 1) elements, One extra element doesn't
hurt anything except for some stack usage.
Fix by using (@MAX_PHANDLE_ARGS - 1) as max element index in initializer.
Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
---
drivers/of/base.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index f4ab4086b80f62c4d9ce428cdde042d0ed4febe2..2432e0f4646d1d829d5b94ae2d2b1717afe286cf 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1448,8 +1448,8 @@ int of_parse_phandle_with_args_map(const struct device_node *np,
char *pass_name __free(kfree) = kasprintf(GFP_KERNEL, "%s-map-pass-thru", stem_name);
struct device_node *cur, *new = NULL;
const __be32 *map, *mask, *pass;
- static const __be32 dummy_mask[] = { [0 ... MAX_PHANDLE_ARGS] = cpu_to_be32(~0) };
- static const __be32 dummy_pass[] = { [0 ... MAX_PHANDLE_ARGS] = cpu_to_be32(0) };
+ static const __be32 dummy_mask[] = { [0 ... (MAX_PHANDLE_ARGS - 1)] = cpu_to_be32(~0) };
+ static const __be32 dummy_pass[] = { [0 ... (MAX_PHANDLE_ARGS - 1)] = cpu_to_be32(0) };
__be32 initial_match_array[MAX_PHANDLE_ARGS];
const __be32 *match_array = initial_match_array;
int i, ret, map_len, match;
--
2.34.1
