linux-kernel - [PATCH 3/3] PCI: Xilinx NWL PCIe: Fix Error for multi function device for legacy interrupts.

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Date:   Tue, 30 Aug 2016 16:09:18 +0530
From:   Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
To:     <robh@...nel.org>, <bhelgaas@...gle.com>,
        <colin.king@...onical.com>, <soren.brinkmann@...inx.com>,
        <marc.zyngier@....com>, <michal.simek@...inx.com>, <arnd@...db.de>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <rgummal@...inx.com>, Bharat Kumar Gogada <bharatku@...inx.com>
Subject: [PATCH 3/3] PCI: Xilinx NWL PCIe: Fix Error for multi function device for legacy interrupts.

PCIe legacy interrupts start at 1, not at 0.
When testing with multi function device "error: hwirq 0x4 is too large for
dummy" error comes.
So adding one addtional interrupt when creating irq domain.

Signed-off-by: Bharat Kumar Gogada <bharatku@...inx.com>
---
 drivers/pci/host/pcie-xilinx-nwl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/host/pcie-xilinx-nwl.c
index d8d43e6..9f04411 100644
--- a/drivers/pci/host/pcie-xilinx-nwl.c
+++ b/drivers/pci/host/pcie-xilinx-nwl.c
@@ -561,7 +561,7 @@ static int nwl_pcie_init_irq_domain(struct nwl_pcie *pcie)
 	}
 
 	pcie->legacy_irq_domain = irq_domain_add_linear(legacy_intc_node,
-							INTX_NUM,
+							INTX_NUM + 1,
 							&legacy_domain_ops,
 							pcie);
 
-- 
2.1.1