Here is my output from lspci -v for the PVR-350 and pcHDTV 5500
02:07.0 Multimedia video controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 32, IRQ 23
Memory at e0000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
02:07.1 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [Audio Port] (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 32, IRQ 23
Memory at e1000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
02:07.2 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [MPEG Port] (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 32, IRQ 23
Memory at e2000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
02:07.4 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [IR Port] (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at e3000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
02:08.0 Multimedia video controller: Internext Compression Inc iTVC15 MPEG-2 Encoder (rev 01)
Subsystem: Hauppauge computer works Inc. WinTV PVR-350
Flags: bus master, medium devsel, latency 32, IRQ 22
Memory at <ignored> (32-bit, prefetchable)
Capabilities: [44] Power Management version 2
My /etc/modules.d/ivtv contains the following lines
alias char-major-81 videodev
alias char-major-81-0 ivtv