diff options
author | Miaoqian Lin <linmq006@gmail.com> | 2023-01-02 15:13:18 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 11:32:59 +0300 |
commit | ea54b608d85b7536f92238f3259730fa06cb5d21 (patch) | |
tree | c80ddea546aab8ce0461449862bccf2416245e0c /drivers/irqchip | |
parent | dcb8c33561f6a83a68bb01dae240996012aaba34 (diff) | |
download | linux-ea54b608d85b7536f92238f3259730fa06cb5d21.tar.xz |
irqchip: Fix refcount leak in platform_irqchip_probe
[ Upstream commit 6caa5a2b78f5f53c433d3a3781e53325da22f0ac ]
of_irq_find_parent() returns a node pointer with refcount incremented,
We should use of_node_put() on it when not needed anymore.
Add missing of_node_put() to avoid refcount leak.
Fixes: f8410e626569 ("irqchip: Add IRQCHIP_PLATFORM_DRIVER_BEGIN/END and IRQCHIP_MATCH helper macros")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230102121318.3990586-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r-- | drivers/irqchip/irqchip.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/irqchip/irqchip.c b/drivers/irqchip/irqchip.c index 3570f0a588c4..7899607fbee8 100644 --- a/drivers/irqchip/irqchip.c +++ b/drivers/irqchip/irqchip.c @@ -38,8 +38,10 @@ int platform_irqchip_probe(struct platform_device *pdev) struct device_node *par_np = of_irq_find_parent(np); of_irq_init_cb_t irq_init_cb = of_device_get_match_data(&pdev->dev); - if (!irq_init_cb) + if (!irq_init_cb) { + of_node_put(par_np); return -EINVAL; + } if (par_np == np) par_np = NULL; @@ -52,8 +54,10 @@ int platform_irqchip_probe(struct platform_device *pdev) * interrupt controller. The actual initialization callback of this * interrupt controller can check for specific domains as necessary. */ - if (par_np && !irq_find_matching_host(par_np, DOMAIN_BUS_ANY)) + if (par_np && !irq_find_matching_host(par_np, DOMAIN_BUS_ANY)) { + of_node_put(par_np); return -EPROBE_DEFER; + } return irq_init_cb(np, par_np); } |