tg3 driver reporting "No interrupt was generated using MSI" on system boot

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Issue

The Network interfaces did not create an interrupt queue using MSI on system boot.
The following messages were logged:

kernel: tg3 0000:46:04.0: eth2: No interrupt was generated using MSI. Switching to INTx mode. Please report this failure to the PCI maintainer and include system chipset information

Environment

Red Hat Enterprise Linux 5.8
kernel version 2.6.18-308

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