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| author | Miaoqian Lin <linmq006@gmail.com> | 2023-01-02 16:13:18 +0400 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-02-05 11:07:52 +0000 |
| commit | 6caa5a2b78f5f53c433d3a3781e53325da22f0ac (patch) | |
| tree | 22fb21a62f0f2544715e8c16cae7c17f8a8876e0 /drivers/irqchip/irqchip.c | |
| parent | 5dc4c995db9eb45f6373a956eb1f69460e69e6d4 (diff) | |
| download | linux-stable-6caa5a2b78f5f53c433d3a3781e53325da22f0ac.tar.gz linux-stable-6caa5a2b78f5f53c433d3a3781e53325da22f0ac.tar.bz2 linux-stable-6caa5a2b78f5f53c433d3a3781e53325da22f0ac.zip | |
irqchip: Fix refcount leak in platform_irqchip_probe
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
Diffstat (limited to 'drivers/irqchip/irqchip.c')
| -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); } |