[PATCH kvmtool] x86: mptable: Fix PCI device number in source bus IRQ

[PATCH kvmtool] x86: mptable: Fix PCI device number in source bus IRQ

[Dongli Si]

For PCI interrupts, bits 6:2 of srcbusirq identify the source device.
Use dev_hdr->dev_num to populate those bits.

Fixes: f83cd1611d4b ("kvm tools: irq: replace the x86 irq rbtree with the PCI device tree")
Signed-off-by: Dongli Si <dongli.si.linux@gmail.com>
---
 x86/mptable.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x86/mptable.c b/x86/mptable.c
index f13cf0f..f4753bd 100644
--- a/x86/mptable.c
+++ b/x86/mptable.c
@@ -180,7 +180,7 @@ int mptable__init(struct kvm *kvm)
 		unsigned char srcbusirq;
 		struct pci_device_header *pci_hdr = dev_hdr->data;
 
-		srcbusirq = (pci_hdr->subsys_id << 2) | (pci_hdr->irq_pin - 1);
+		srcbusirq = (dev_hdr->dev_num << 2) | (pci_hdr->irq_pin - 1);
 		mpc_intsrc = last_addr;
 		mptable_add_irq_src(mpc_intsrc, pcibusid, srcbusirq, ioapicid, pci_hdr->irq_line);
 
-- 
2.56.0