One of Emulex HBA card not detected.

Issue

• Three identical HP DL580 G7's with Emulex HBA's in PCI slots 6 and 7. The card in slot 7 is fully available but slot 6 isn't being picked up by the PCI subsystem.

I can see both cards when queried through dmidecode...

Handle 0x0906, DMI type 9, 17 bytes
System Slot Information
        Designation: PCI-E Slot 6
        Type: x8 PCI Express 2 x16
        Current Usage: In Use
        Length: Long
        ID: 6
        Characteristics:
                3.3 V is provided
                PME signal is supported
        Bus Address: 0000:90:00.0

Handle 0x0907, DMI type 9, 17 bytes
System Slot Information
        Designation: PCI-E Slot 7
        Type: x4 PCI Express 2 x8
        Current Usage: In Use
        Length: Long
        ID: 7
        Characteristics:
                3.3 V is provided
                PME signal is supported
        Bus Address: 0000:05:00.0

but not through lspci...

-bash-3.2# lspci |grep -i fibre
05:00.0 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
05:00.1 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
-bash-3.2# lspci |grep -i 05:00
05:00.0 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
05:00.1 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
-bash-3.2# lspci |grep -i 90:00

This means we only have a single path to SAN storage. PLease can you advise?