linux-kernel - [tip:irq/urgent] irqchip/gic-v2m: Fix SPI release on error path

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Message-ID: <tip-cbaf45a6be497c272e80500e4fd9bccdf20d5050@git.kernel.org>
Date:   Fri, 22 Jun 2018 05:26:02 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     yangyingliang@...wei.com, alexandre.belloni@...tlin.com,
        sumit.garg@...aro.org, mingo@...nel.org, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, marc.zyngier@....com,
        jason@...edaemon.net, hpa@...or.com
Subject: [tip:irq/urgent] irqchip/gic-v2m: Fix SPI release on error path

Commit-ID:  cbaf45a6be497c272e80500e4fd9bccdf20d5050
Gitweb:     https://git.kernel.org/tip/cbaf45a6be497c272e80500e4fd9bccdf20d5050
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 22 Jun 2018 10:52:50 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 22 Jun 2018 14:22:00 +0200

irqchip/gic-v2m: Fix SPI release on error path

On failing to allocate the required SPIs, the actual number of interrupts
should be freed and not its log2 value.

Fixes: de337ee30142 ("irqchip/gic-v2m: Add PCI Multi-MSI support")
Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: Yang Yingliang <yangyingliang@...wei.com>
Cc: Sumit Garg <sumit.garg@...aro.org>
Link: https://lkml.kernel.org/r/20180622095254.5906-4-marc.zyngier@arm.com

---
 drivers/irqchip/irq-gic-v2m.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index 0f52d44b3f69..f5fe0100f9ff 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -199,7 +199,7 @@ static int gicv2m_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
 
 fail:
 	irq_domain_free_irqs_parent(domain, virq, nr_irqs);
-	gicv2m_unalloc_msi(v2m, hwirq, get_count_order(nr_irqs));
+	gicv2m_unalloc_msi(v2m, hwirq, nr_irqs);
 	return err;
 }