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The interrupt mapping for legacy interrupts was backwards causing interrupts to be mapped improperly behind a PCIe to PCI bridge (ie GW16082 mezzanine). Signed-off-by: Tim Harvey <tharvey@gateworks.com> SVN-Revision: 38519
29 lines
796 B
Diff
29 lines
796 B
Diff
From 73a0e49b562da9b06e487fb8e051075543495be5 Mon Sep 17 00:00:00 2001
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From: Tim Harvey <tharvey@gateworks.com>
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Date: Thu, 17 Oct 2013 15:50:48 -0700
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Subject: [PATCH 1/5] PCI: imx6: swizzle interrupts
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Signed-off-by: Tim Harvey <tharvey@gateworks.com>
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---
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drivers/pci/host/pcie-designware.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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--- a/drivers/pci/host/pcie-designware.c
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+++ b/drivers/pci/host/pcie-designware.c
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@@ -676,7 +676,13 @@ int dw_pcie_map_irq(const struct pci_dev
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{
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struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata);
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- return pp->irq;
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+ switch (pin) {
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+ case 1: return pp->irq - 3;
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+ case 2: return pp->irq - 2;
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+ case 3: return pp->irq - 1;
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+ case 4: return pp->irq;
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+ default: return -1;
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+ }
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}
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static void dw_pcie_add_bus(struct pci_bus *bus)
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