Patch "irqchip/loongson-pch-msi: Fix off-by-one on allocation error path" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

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

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     irqchip-loongson-pch-msi-fix-off-by-one-on-allocatio.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 3988e882677a9bfcb4a952b24a5f878347b27575
Author: Zenghui Yu <yuzenghui@xxxxxxxxxx>
Date:   Wed Mar 27 22:23:34 2024 +0800

    irqchip/loongson-pch-msi: Fix off-by-one on allocation error path
    
    [ Upstream commit b327708798809328f21da8dc14cc8883d1e8a4b3 ]
    
    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
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/irqchip/irq-loongson-pch-msi.c b/drivers/irqchip/irq-loongson-pch-msi.c
index 6e1e1f011bb29..dd4d699170f4e 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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