On Mon, 19 Aug 2024 10:10:11 +0100,
Ma Ke <make24@xxxxxxxxxxx> wrote:
>
> Add the missing of_node_put() to release the refcount incremented
> by of_find_matching_node().
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 4266ab1a8ff5 ("irqchip/gic-v2m: Refactor to prepare for ACPI support")
> Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
> ---
> drivers/irqchip/irq-gic-v2m.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
> index 51af63c046ed..65a55ee7bb30 100644
> --- a/drivers/irqchip/irq-gic-v2m.c
> +++ b/drivers/irqchip/irq-gic-v2m.c
> @@ -396,6 +396,7 @@ static int __init gicv2m_of_init(struct fwnode_handle *parent_handle,
> ret = of_address_to_resource(child, 0, &res);
> if (ret) {
> pr_err("Failed to allocate v2m resource.\n");
> + of_node_put(child);
> break;
> }
>
Although this indeed fixes a minor issue, it is probably better to
unify all the failure conditions. Something like this (untested):
diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index 51af63c046ed..d5988012eb40 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -407,12 +407,12 @@ static int __init gicv2m_of_init(struct fwnode_handle *parent_handle,
ret = gicv2m_init_one(&child->fwnode, spi_start, nr_spis,
&res, 0);
- if (ret) {
- of_node_put(child);
+ if (ret)
break;
- }
}
+ if (ret && child)
+ of_put_node(child);
if (!ret)
ret = gicv2m_allocate_domains(parent);
if (ret)
Thanks,
M.
--
Without deviation from the norm, progress is not possible.
