From: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> [ Upstream commit 39ab331ab5d377a18fbf5a0e0b228205edfcc7f4 ] Replace two open-coded calculations of the buffer size by invocations of sizeof() on the buffer itself, to make sure the code will always use the actual buffer size. Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Link: https://lore.kernel.org/r/817c0b9626fd30790fc488c472a3398324cfcc0c.1724156125.git.geert+renesas@xxxxxxxxx Signed-off-by: Rob Herring (Arm) <robh@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/of/irq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 8fd63100ba8f0..d67b69cb84bfe 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -357,8 +357,8 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar addr = of_get_property(device, "reg", &addr_len); /* Prevent out-of-bounds read in case of longer interrupt parent address size */ - if (addr_len > (3 * sizeof(__be32))) - addr_len = 3 * sizeof(__be32); + if (addr_len > sizeof(addr_buf)) + addr_len = sizeof(addr_buf); if (addr) memcpy(addr_buf, addr, addr_len); -- 2.43.0
