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of/irq: Correct element count for array @dummy_imask in API of_irq_parse_raw()

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Array @dummy_imask only needs MAX_PHANDLE_ARGS elements, but it actually
has (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@quicinc.com>
Link: https://lore.kernel.org/r/20241209-of_irq_fix-v1-2-782f1419c8a1@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
This commit is contained in:
Zijun Hu 2024-12-09 21:25:00 +08:00 committed by Rob Herring (Arm)
parent 4bc244f681
commit 3a973ce1b9
1 changed files with 1 additions and 1 deletions
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drivers/of/irq.c
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@ -170,7 +170,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
struct device_node *ipar, *tnode, *old = NULL;
__be32 initial_match_array[MAX_PHANDLE_ARGS];
const __be32 *match_array = initial_match_array;
const __be32 *tmp, dummy_imask[] = { [0 ... MAX_PHANDLE_ARGS] = cpu_to_be32(~0) };
const __be32 *tmp, dummy_imask[] = { [0 ... (MAX_PHANDLE_ARGS - 1)] = cpu_to_be32(~0) };
u32 intsize = 1, addrsize;
int i, rc = -EINVAL;