From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 11 Mar 2016 08:14:43 +0000 (+0300)
Subject: irqchip/irq-alpine-msi: Release the correct domain on error
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=143d36a33b4d59a56bb8e913a17a105578fd3237;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

irqchip/irq-alpine-msi: Release the correct domain on error

The "msi_domain" variable is NULL here so it leads to a NULL dereference.  It
looks like we actually intended to free "middle_domain".

Fixes: e6b78f2c3e14 ('irqchip: Add the Alpine MSIX interrupt controller')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: kernel-janitors@vger.kernel.org
Cc: Tsahee Zidenberg <tsahee@annapurnalabs.com>
Link: http://lkml.kernel.org/r/20160311081442.GE31887@mwanda
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c
index f8712722a606..25384255b30f 100644
--- a/drivers/irqchip/irq-alpine-msi.c
+++ b/drivers/irqchip/irq-alpine-msi.c
@@ -220,7 +220,7 @@ static int alpine_msix_init_domains(struct alpine_msix_data *priv,
 					       middle_domain);
 	if (!msi_domain) {
 		pr_err("Failed to create MSI domain\n");
-		irq_domain_remove(msi_domain);
+		irq_domain_remove(middle_domain);
 		return -ENOMEM;
 	}