A small script to easily search and display info on pci devices on linux; I wrote this script to shortcut the retrieval of info from lspci whilst seting up a new laptop with debian...

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#!/bin/bash
if [ "$1" != "" ]; then
    searchTerm=$1
    shift
    lspci -d $(echo $(lspci -n | nl | head -$(echo $(lspci | nl | grep -i "$searchTerm") | cut -d " " -f 1) | tail -1) | cut -d " " -f 4) -v $@
else
    echo "please specify peramiters..."
fi

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save the script to ~/bin/, run a chmod +x script-name.sh and run it with a search term.

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example usage;

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# ./pci-checker.sh audio

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mike@mike-laptop2:/home/mike/bin$ ./pci-checker.sh audio
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
    Subsystem: Hewlett-Packard Company Device 1605
    Flags: bus master, fast devsel, latency 0, IRQ 29
    Memory at d4500000 (64-bit, non-prefetchable) [size=16K]
    Capabilities:
    Kernel driver in use: HDA Intel

# sudo ./pci-checker.sh wireless -v

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mike@mike-laptop2:/home/mike/bin$ sudo ./pci-checker.sh wireless -v
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA Wireless LAN Controller (rev 10)
    Subsystem: Hewlett-Packard Company Device 1467
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-     Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 16
    Region 0: I/O ports at 3000 [size=256]
    Region 1: Memory at d3500000 (32-bit, non-prefetchable) [size=16K]
    Capabilities: [40] Power Management version 3
        Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
        Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
        Address: 0000000000000000  Data: 0000
    Capabilities: [70] Express (v1) Legacy Endpoint, MSI 00
        DevCap:    MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
            ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
        LnkCap:    Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <64us
            ClockPM+ Surprise- LLActRep- BwNot-
        LnkCtl:    ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
            ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
        LnkSta:    Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
    Capabilities: [100 v1] Advanced Error Reporting
        UESta:    DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
        UEMsk:    DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
        UESvrt:    DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
        CESta:    RxErr+ BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
        CEMsk:    RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
        AERCap:    First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
    Capabilities: [140 v1] Virtual Channel
        Caps:    LPEVC=0 RefClk=100ns PATEntryBits=1
        Arb:    Fixed- WRR32- WRR64- WRR128-
        Ctrl:    ArbSelect=Fixed
        Status:    InProgress-
        VC0:    Caps:    PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
            Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
            Ctrl:    Enable+ ID=0 ArbSelect=Fixed TC/VC=01
            Status:    NegoPending- InProgress-
    Capabilities: [160 v1] Device Serial Number 88-55-22-fe-ff-4c-e0-00
    Kernel driver in use: rtl819xSE