[PATCH 5.4 103/355] PCI: aardvark: Fix return value of MSI domain .alloc() method

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From: Marek Behún <kabel@xxxxxxxxxx>

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@xxxxxxxxxx
Fixes: f21a8b1b6837 ("PCI: aardvark: Move to MSI handling using generic MSI support")
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Signed-off-by: Marek Behún <kabel@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/pci/controller/pci-aardvark.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -942,7 +942,7 @@ static int advk_msi_irq_domain_alloc(str
 				    domain->host_data, handle_simple_irq,
 				    NULL, NULL);
 
-	return hwirq;
+	return 0;
 }
 
 static void advk_msi_irq_domain_free(struct irq_domain *domain,





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