The following commit has been merged into the irq/core branch of tip:
Commit-ID: b327708798809328f21da8dc14cc8883d1e8a4b3
Gitweb: https://git.kernel.org/tip/b327708798809328f21da8dc14cc8883d1e8a4b3
Author: Zenghui Yu <yuzenghui@xxxxxxxxxx>
AuthorDate: Wed, 27 Mar 2024 22:23:34 +08:00
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Tue, 09 Apr 2024 11:03:16 +02:00
irqchip/loongson-pch-msi: Fix off-by-one on allocation error path
When pch_msi_parent_domain_alloc() returns an error, there is an off-by-one
in the number of interrupts to be freed.
Fix it by passing the number of successfully allocated interrupts, instead of the
relative index of the last allocated one.
Fixes: 632dcc2c75ef ("irqchip: Add Loongson PCH MSI controller")
Signed-off-by: Zenghui Yu <yuzenghui@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240327142334.1098-1-yuzenghui@xxxxxxxxxx
---
drivers/irqchip/irq-loongson-pch-msi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-loongson-pch-msi.c b/drivers/irqchip/irq-loongson-pch-msi.c
index 6e1e1f0..dd4d699 100644
--- a/drivers/irqchip/irq-loongson-pch-msi.c
+++ b/drivers/irqchip/irq-loongson-pch-msi.c
@@ -136,7 +136,7 @@ static int pch_msi_middle_domain_alloc(struct irq_domain *domain,
err_hwirq:
pch_msi_free_hwirq(priv, hwirq, nr_irqs);
- irq_domain_free_irqs_parent(domain, virq, i - 1);
+ irq_domain_free_irqs_parent(domain, virq, i);
return err;
}
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