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irqchip/loongson-pch-msi: Fix off-by-one on allocation error path

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[ Upstream commit b327708798 ]

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: 632dcc2c75 ("irqchip: Add Loongson PCH MSI controller")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Link: https://lore.kernel.org/r/20240327142334.1098-1-yuzenghui@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zenghui Yu
2024-03-27 22:23:34 +08:00
committed by Greg Kroah-Hartman
parent 4c4ffb49cf
commit 6eae4f148b
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-loongson-pch-msi.c
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@@ -136,7 +136,7 @@ static int pch_msi_middle_domain_alloc(struct irq_domain *domain,
err_hwirq: err_hwirq:
pch_msi_free_hwirq(priv, hwirq, nr_irqs); 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; return err;
} }