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Subject[tip: irq/core] genirq: Initialize resend_node hlist for all interrupt descriptors
The following commit has been merged into the irq/core branch of tip:

Commit-ID: b184c8c2889ceef0a137c7d0567ef9fe3d92276e
Gitweb: https://git.kernel.org/tip/b184c8c2889ceef0a137c7d0567ef9fe3d92276e
Author: Dawei Li <dawei.li@shingroup.cn>
AuthorDate: Mon, 22 Jan 2024 16:57:15 +08:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Wed, 24 Jan 2024 14:15:41 +01:00

genirq: Initialize resend_node hlist for all interrupt descriptors

For a CONFIG_SPARSE_IRQ=n kernel, early_irq_init() is supposed to
initialize all interrupt descriptors.

It does except for irq_desc::resend_node, which ia only initialized for the
first descriptor.

Use the indexed decriptor and not the base pointer to address that.

Fixes: bc06a9e08742 ("genirq: Use hlist for managing resend handlers")
Signed-off-by: Dawei Li <dawei.li@shingroup.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240122085716.2999875-5-dawei.li@shingroup.cn


---
kernel/irq/irqdesc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 27ca1c8..371eb17 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -600,7 +600,7 @@ int __init early_irq_init(void)
mutex_init(&desc[i].request_mutex);
init_waitqueue_head(&desc[i].wait_for_threads);
desc_set_defaults(i, &desc[i], node, NULL, NULL);
- irq_resend_init(desc);
+ irq_resend_init(&desc[i]);
}
return arch_early_irq_init();
}
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