From: Marek Behún <kabel@kernel.org>
Date: Thu, 28 Oct 2021 18:56:54 +0000 (+0200)
Subject: PCI: aardvark: Fix return value of MSI domain .alloc() method
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ce44e532b96e5308cd59f4610de2fde85c6ef40e;p=linux.git

PCI: aardvark: Fix return value of MSI domain .alloc() method

commit e4313be1599d397625c14fb7826996813622decf upstream.

MSI domain callback .alloc() (implemented by advk_msi_irq_domain_alloc()
function) should return zero on success, since non-zero value indicates
failure.

When the driver was converted to generic MSI API in commit f21a8b1b6837
("PCI: aardvark: Move to MSI handling using generic MSI support"), it
was converted so that it returns hwirq number.

Fix this.

Link: https://lore.kernel.org/r/20211028185659.20329-3-kabel@kernel.org
Fixes: f21a8b1b6837 ("PCI: aardvark: Move to MSI handling using generic MSI support")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 621dbedf6605e..c65c339df6f86 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -1180,7 +1180,7 @@ static int advk_msi_irq_domain_alloc(struct irq_domain *domain,
 				    domain->host_data, handle_simple_irq,
 				    NULL, NULL);
 
-	return hwirq;
+	return 0;
 }
 
 static void advk_msi_irq_domain_free(struct irq_domain *domain,