How to check message error about IRQ show in terminal ?

The system (CentOS 5.5) show message error "localhost kernel: Disabling IRQ #209"
Use the typed command (as root) 'lspci -v'





[root@localhost ~]# lspci -v
00:00.0 RAM memory: nVidia Corporation MCP61 Memory Controller (rev a1)
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: [44] HyperTransport: Slave or Primary Interface
Capabilities: [dc] HyperTransport: MSI Mapping

00:01.0 ISA bridge: nVidia Corporation MCP61 LPC Bridge (rev a2)
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: bus master, 66MHz, fast devsel, latency 0

00:01.1 SMBus: nVidia Corporation MCP61 SMBus (rev a2)
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: 66MHz, fast devsel, IRQ 11
I/O ports at dc00 [size=64]
I/O ports at 5000 [size=64]
I/O ports at 6000 [size=64]
Capabilities: [44] Power Management version 2

00:01.2 RAM memory: nVidia Corporation MCP61 Memory Controller (rev a2)
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: 66MHz, fast devsel

00:02.0 USB Controller: nVidia Corporation MCP61 USB Controller (rev a2) (prog-if 10 [OHCI])
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 217
Memory at dfeff000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:02.1 USB Controller: nVidia Corporation MCP61 USB Controller (rev a2) (prog-if 20 [EHCI])
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 209
Memory at dfefec00 (32-bit, non-prefetchable) [size=256]
Capabilities: [44] Debug port
Capabilities: [80] Power Management version 2

00:04.0 PCI bridge: nVidia Corporation MCP61 PCI bridge (rev a1) (prog-if 01 [Subtractive decode])
Flags: bus master, 66MHz, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: dff00000-dfffffff
Prefetchable memory behind bridge: 80000000-800fffff
Capabilities: [b8] #0d [0000]
Capabilities: [8c] HyperTransport: MSI Mapping